Greater London on Wikipedia.

My knowledge of the divisions of London are very vague. If a church is wrongly listed here, please let me know!!
 

Churches in Abbey Wood, Acton, Aldgate East/Tower Hamlets, Alperton, Balham, Barnes, Barnsbury, Bayswater, Beckenham, Beddington, Belgravia, Belmont (Sutton), Bermondsey, Belvedere, Bethnal Green, Bexley, Bexleyheath, Biggin Hill, Blackfriars, Blackheath, Bloomsbury and St. Giles, Bow, Bow Common,  Brentford, Brixton, Brockley, Bromley, Bromley-by-Bow, Brondesbury, Burnt Oak, Camberwell, Cambridge Heath, Camden Town, Canary Wharf, Charing Cross, Charlton, Chelsea, Childs Hill, Chingford, Chiswick, City of London, City of Westminster, Clapham & Clapham Common, Clapton, Clerkenwell, Colliers Wood, Coulsdon, Covent Garden, Cranford, Crayford, Cricklewood, Crofton Park, Croydon, Cubitt Town, Crystal Palace, Dagenham, Dalston, Denmark Hill, Deptford, Dulwich, Ealing, Earl's Court, East Dulwich, East Finsbury, East Ham, Eltham, Erith, Finchley, Finsbury Park, Fitzrovia, Forest Gate, Forest Hill, Friern Barnet, Fulham, Golders Green, Greenford, Greenwich, Gypsy Hill, Hackney, Hammersmith, Hampstead, Hampton Hill, Hanwell, Hanworth, Harefield, Haringey, Harlesden, Harlington, Harmondsworth, Harrow and Harrow-on-the-Hill, Harrow Weald, Hatch End, Hayes, Hendon, Heston, Highbury, Highgate, Hillingdon, Holborn, Hornchurch, Hornsey and Hornsey Rise, Hounslow, Hoxton, Ilford, Isle of Dogs, Islington, Kennington, Kensal Green and Kensal Rise, Kensal Town, Kensington including South and West Kensington, Kentish Town, Kenton, Kew, Kilburn, Kingsbury, Kingston-upon-Thames, King's Cross, Ladywell, Lambeth, Lee, Lee Green, Lewisham, Leyton, Leytonstone, Limehouse, Little Stanmore, Manor Park, Marylebone, Mayfair, Merton, Mile End, Millwall, Mitcham, Muswell Hill, New Cross, North Finchley, Northolt, Northwood, Notting Hill, Nunhead, Paddington, Peckham, Penge, Pentonville, Perivale, Pimlico, Pinner, Plaistow,  Plumstead, Poplar, Putney, Richmond, Romford, Rotherhithe, St. Giles, St. Mary Cray, St. Paul's Cray, Sanderstead, Savoy, Shadwell, Shepherd's Bush, Shoreditch, Sidcup, Silvertown, Soho, Somers Town, Southall, Southwark, Spitalfields, Stamford Hill, Stanmore, Stepney, Stockwell, Stoke Newington, Stratford, Streatham, Streatham Hill, Sudbury, Surbiton, Sutton, Sydenham, Tooting, Totteridge, Turnham Green, Twickenham, Upper Norwood, Upton Park, Uxbridge, Wallington, Walthamstow, Wanstead, Wapping, Waterloo, Wealdstone, Welling, Wembley, West Drayton, West Ealing, West Ham, West Kensington, West Twyford, Westcombe Park, Westminster, Whitechapel, Willesden and Willesden Green, Wimbledon, Woodside Park, Woolwich, Worcester Park. Some links will open another page.

Abbey Wood
Abbey Wood Community Church meets in Lesnes Abbey Lodge. The church website includes a photo. TQ 4783 7878.
The remains of Lesnes Abbey (some O.S. maps label it as Lessness Abbey). Another view. TQ 479 788. Both © Christopher Skottowe (1958). Link. Grade II listed.
The Methodist Church is on McLeod Road and Openshaw Road - and was seen by Streetview in 2019. Link. The history page says that the first church was opened in 1934, and now serves as the church hall. It's likely to be the adjacent building seen here, in 2021.
St. Benet (R.C.) on Abbey Grove was seen by Streetview in 2019. TQ 4708 7897. Link.
St. Michael and All Angels, on Abbey Wood Road, as seen by Streetview in 2021. TQ 4715 7888. Link. According to the Abbey Wood Wikipedia entry, it was consecrated in 1908, and was successor to a small church building of 1905 which still stands adjacent, and now serves as the church hall - 2021 Streetview.

Acton
Holy Family (R.C.) on Vale Lane. © Christopher Skottowe (1968).

Aldgate East/Tower Hamlets
Jamia Masjid (Mosque) on Brick Lane. TQ 176 305. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain. Gervase N. E. Charmley advises that this was originally a Huguenot Church, and later served as a synagogue.

Alperton
Methodist Church (1927), on Ealing Road. TQ 1815 8449. © Derek West. Link.
St. James on Stanley Avenue. Derek advises that it was built in 1990, replacing a larger church of 1912. A photo of it is available here. TQ 1842 8402. © Derek West. Link.

Balham
Off Balham High Road is Balham Seventh-day Adventist Community Church. Access to it is via a narrow alley, seen by Streetview in 2022. Circa TQ 2838 7289. Link. The History page says that the present church was built on the site of its predecessor, which had previously "belonged to Spiritualists".
Balham Spiritualist Church, on Balham High Road. TQ 2834 7282. © Janet Gimber (2023). Link.
Kosciól Chrystusa Króla (Christ the King, Polish Catholic), on Balham High Road. Janet Gimber has advised that it was previously Congregational. © Gerard Doherty (2011). Link.
St. Mark (U.R.C.) on Rowfant Road, as seen by Streetview in 2022. TQ 2822 7295. Link.
St. Mary and St. John the Divine (1808), on Balham High Road. TQ 2837 7313. © Steve Bulman. Another view, © Gerard Doherty (2011). Link. Grade II listed, wherein it's dated to circa 1806 with later additions, particularly the west front of circa 1904.
 

Barnes
After languishing for a long time on the long-term unsolved page, Jay Priest has resolved the following mystery. Greg Mishevski was interested in the location for a scene in the film "Girl in the Headlines" (1963), which shows a cemetery chapel. He'd provided two stills - 1, 2. Jay has identified it as the chapel in Barnes Cemetery in Greater London, and had provided this confirmatory link. TQ 2269 7614.

Barnsbury
St. Andrew on Thornhill Square. Another view. TQ 3080 8415. Both © Chris Kippin (2022). Link has an interior photo. The history page dates its consecration to 1854.

Bayswater
The Greek Orthodox Cathedral of the Divine Wisdom, Hagia Sophia. Two interior views - 1, 2. All © Mike Forbester. Link.

Beckenham
Avenue Baptist Church on Avenue Road. © Janet Gimber (2016).
St. Barnabas. Link is to a photo on the church website. 
St. George. 177 TQ 374 696. From an old postcard (franked 1905), Dave Westrap's Collection. Link1. Link2.

Beddington
St. Mary the Virgin. TQ 295 652. From an old postcard in Geoff Watt's Collection. A modern view, © Chris Kippin (2018). Link.

Belgravia
St. Michael on Chester Square. Another view. Link. St. Peter. Link. All © Gervase N. E. Charmley.

Belmont (Sutton)
St. John the Evangelist (CoE and Methodist) on Avenue Road, consecrated in 1966. © Gerard Doherty (2011). Link.

Bermondsey.

Belvedere
All Saints on Nuxley Road. The church opened in 1853, but wasn't finally completed until 1861. TQ 4925 7830. From an old postcard view in Reg Dosell's Collection. Link (history here). Grade II listed.

Bethnal Green, Bexley, Bexleyheath.

Biggin Hill
St. Mark on Church Road and Main Road. Often referred to as The Moving Church, it was built from the dismantled fabric of the redundant All Saints in North Peckham. See St. Mark's history here. Another view. TQ 4195 5894. Both © Karel Kuča (2011). Link.

Blackfriars
Christ Church on Blackfriars Road, consecrated in 1956. The Action Life Chapel International also worship here. © Gerard Doherty. Link.

Blackheath, Bloomsbury and St. Giles, Bow.
 

Bow Common
All Hallows Bow on Devons Road and Blackthorn Street. TQ 3746 8204. © Chris Kippin (2022). Link.
Holy Name and Our Lady of the Sacred Heart (R.C.) stands at the corner of St Paul’s Way and Bow Common Lane. The church notice board says that it is also home to a Vietnamese congregation. Another view. TQ 3723 8178. Both © Chris Kippin (2022). Link. The "About" page dates it to 1894, restored after severe damage in WWII. It also says that it was successor to a temporary chapel on Devons Road of 1892-3.
Lighthouse Baptist Church on Devons Road and Brock Place. TQ 3753 8208. © Chris Kippin (2022). Link.
St. Paul (1858) on Burdett Road. Destroyed in WWII, a modern church was built on the site in 1960. TQ 3682 8168. From an old postcard in Reg Dosell's Collection. The present church, © Chris Kippin (2022). Link, with history page here.
 

Brentford
Living Hope Church (Elim Pentecostal) on Junction Road. © Christopher Skottowe (2018). Living Hope Church (Elim Pentecostal) on Junction Road. © Christopher Skottowe (2018).
The former St. George, on Kew Bridge Road, which until recently housed a museum of musical instruments. Another view. Both © David Gallimore.
St. John the Evangelist on Boston Park Road. © Christopher Skottowe (1968).v

Brixton
Kingdom Hall of Jehovah's Witnesses on Coldharbour Lane. TQ 321 759. © Mehmood Naqshbandi (2009).
St. Matthew. From an old postcard (franked 1919), Bulman Collection. A modern view, and another. Both © Tim Tomlinson.
Truth Temple Outreach Ministries on Coldharbour Lane. TQ 321 759. © Mehmood Naqshbandi (2009).
Unitarian Chapel on Effra Road. © unitarian.co.uk. This, and many other old engravings on this website, are reproduced from the downloadable books on the Unitarian Church Headquarters website here. The books are Pictures of Unitarian Churches by Emily Sharpe (1901) and the 1914 edition of Nonconformist Church Architecture by Ronald P. Jones M.A, (Oxon), and the images are reproduced by kind permission of James Barry of Unitarian Church Headquarters. My appreciation also to Mike Berrell for his efforts in this regard.

Brockley.
 

Bromley
 

Bromley-by-Bow
Church in the Community on Bruce Road and St. Leonard's Street was previously Bow Congregational Church. TQ 3792 8279. © Chris Kippin (2022).

Brondesbury.

Burnt Oak
St. Alphage. © Bill McKenzie.

Camberwell.

Cambridge Heath
Salvation Army. © Rob Brettle.

Camden Town
Greek Orthodox Cathedral of All Saints on Camden Street. Interior view. Both © Mike Forbester. Link.

Canary Wharf.

Charing Cross
Quaker Meeting House, on St. Martin's Lane. © Gervase N. E. Charmley.
The former Welsh Presbyterian Church. © Gervase N. E. Charmley.

Charlton
Our Lady of Grace (R.C., consecrated 1907) on Charlton Road. Another view. Both © Gerard Doherty (2011). Link.
St. Luke with Holy Trinity, on The Village, is Grade II Listed. Another view. Both © Gerard Doherty (2011). Link.
St. Thomas (1849-50) on Maryon Road. Another view. Both © Gerard Doherty (2011). Link.
U.R.C. (originally Congregational, 1902) on Bramshot Avenue. Another view. Both © Gerard Doherty (2011). Link.

Chelsea.

Childs Hill.
All Saints (1853-6) on Church Walk. TQ 2490 8630. Link. The Baptist Church on Mortimer Close (1870). The present window above the double doors isn't original - it originally had a wheel window, as can be seen here. Link. Both © Derek West.

Chingford
St. Peter & St. Paul. Another view. Both from old postcards in Steve Bulman's Collection. All Saints (the Old Church), from an old postcard in Paul E. Barnett's Collection. Link (for both churches).

Chiswick
Chiswick Methodist Church is on Sutton Court Road, and was seen by Streetview in 2022. It stands on the site of an earlier Wesleyan Methodist Chapel. An old postcard of it can (for the moment at least) be seen here. TQ 2041 7799. Link.
Our Lady of Grace (R.C., 1886) on Chiswick High Road. It stands on the site of an earlier church of 1864. Another view. TQ 2082 7846. Both © Martin Richter (2015). Link1. Link2. Grade II listed.
St. Mary's Convent (interior). A long term resident on the Unknown's page, the postcard of an interior from Brian Curtis's Collection has been ID'd by Janet Gimber as St. Mary's Convent in Chiswick, on Burlington Lane. It had been posted in 1967 in Chiswick. Hand-written on the back is "Trinity 1967". TQ 2129 7768. Link with confirmatory interior photos here. An eBay image of the interior may not be permanent.
St. Nicholas on Church Street, as seen by Streetview in 2018. TQ 2157 7778. Link. Grade II* listed. For the numerous listed tombs, etc. in the churchyard, see here.

City of London

City of Westminster.

Clapham & Clapham Common.

Clapton
Ark of the Covenant. Unfortunately no photograph, but I had to include an entry because of this astonishing news story that was drawn to my attention by David Regan. Fortunately it includes an old illustration of the church.
Former Clapton Congress Hall (Salvation Army), now a college. From an old postcard, Rob Brettle's Collection. A modern photo, © Rob Brettle.
Madina Mosque Trust on Lea Bridge Road. TQ 349 862. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Clerkenwell
Free-Thinking Christians' Meeting House on St. John's Square. © unitarian.co.uk. This, and many other old engravings on this website, are reproduced from the downloadable books on the Unitarian Church Headquarters website here. The books are Pictures of Unitarian Churches by Emily Sharpe (1901) and the 1914 edition of Nonconformist Church Architecture by Ronald P. Jones M.A, (Oxon), and the images are reproduced by kind permission of James Barry of Unitarian Church Headquarters. My appreciation also to Mike Berrell for his efforts in this regard.
St. James (1792). Interior view. Both © John Balaam (2011). Three additional views - 1, 2, 3, all © Chris Stafford (2013). Link. Grade II* listed.
St. Mark, on Myddelton Square. Built in 1826-8. TQ 3128 8293. © Peter Hobday. Link. Grade II listed, wherein it's dated to 1827.
St. Peter (R.C., 1862-3) on Clerkenwell Road. Two of the interior - 1, 2. All © Chris Stafford (2013). TQ 3128 8206. Link. Grade II* listed.

Colliers Wood
Christ Church (1874), on Christchurch Road. This old postcard, from Steve Bulman's Collection, was of long-standing in the "Unknown" section. A church with an unusual spire - and the sender has written this - "I daresay you recognize the old church, although they have omitted to print the name....". Although originally identified as St. Augustine in Dudley, it certainly wasn't that, since a photo has now been sent in, and it can be seen on the Dudley page. Thanks are due to Garry Barr for providing the final identification, and this confirmatory Link. A modern view of the church - though the trees are hiding it rather well. © Gerard Doherty (2011).

Coulsdon
Methodist Church on Brighton Road. TQ 3012 5990. © Janet Gimber (2023). Link, where it's dated to 1911.
St. John the Evangelist on Canon's Hill. From an old postcard in Reg Dosell's Collection. A 2018 Streetview provides a modern view. TQ 3127 5820. Link. Grade I listed.

Covent Garden
Corpus Christi (R.C.), Maiden Lane. © Bill Henderson. Link.
St. Giles-in-the-Fields (the Poets' Church) on St. Giles High Street : two interior views - 1, 2, both © Peter Morgan (2019). TQ 2996 8126. Link1. Link2 (has an exterior photo). Grade I listed.
St. Paul. © Mark Summers. Another view, and the interior. Numerous plaques commemorate deceased actors. All © Peter Morgan (2016). Link.
The former West Street Chapel has a long and varied history. Built in 1700 for French Huguenots. In 1743, the Wesley brothers took it over as a Methodist Chapel, the first such in London. In 1799 it became Free Episcopal (i.e. CoE), and was then successively Irish Anglican, Evangelical Anglican, a Chapel-of-Ease to St. Giles, and is now in commercial use. © Gervase N. E. Charmley. Link.

Cranford
Google Maps says that Calvary Baptist Church stands on High Street, at number 53. The house at left in a 2022 Streetview is number 55 (57 is further to the left), so presumably the right hand part of that semi-detached is 53, but there is no visible signage, and it doesn't seem to have a web presence. Can you confirm if this church exists in this location?
Our Lady and St. Christopher (R.C.), as seen in the background by Streetview in 2022, stands off High Street. TQ 1040 7716. Link.
St. Dunstan, © Christopher Skottowe (1963), and one of the tower, (photo dateable to 1939), from his collection. TQ 1016 7818. Link. Grade II* listed.

Crayford.

Cricklewood
Mosque and Islamic Centre of Brent on Chichele Road and Howard Road. TQ 237 856. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain. Janet Gimber has advised that this was Cricklewood Congregational Church (1885), which closed in 1980. It had a mission church on the Edgeware Road, 1913-33.
St. Agnes (R.C., 1930) on Cricklewood Lane. TQ 2421 8614. © Derek West. Link. Link2 which says that there were two preceding churches, dating from 1900 and 1918. It says that after the present church was built, the 1918 church was used as the parish hall and sacristy. I haven't been able to confirm it, but the pinkish building visible in this 2019 Streetview attached to the rear of the church is a plausible candidate for the 1918 church.

Crofton Park
St. Hilda (1908) on Brockley Road. © Gerard Doherty (2010). Link1. Link2.

Croydon.

Cubitt Town.

Crystal Palace
Greek Orthodox Community of Saint Constantine and Saint Helen on Westow Street, Upper Norwood, was originally St. Andrew (Presbyterian). The present parish was founded in 1967, and as St. Andrew was consecrated before 1888. Another view. Both © Gerard Doherty (2011). Link.
The now-demolished St. Aubyn (Congregational). From an old postcard (franked 1917), Steve Bulman's Collection.

Dagenham
St. Peter and St. Paul. From an old postcard in Reg Dosell's Collection. Link1 which says the church was re-roofed in 1913. Was this when the spire was taken down too?. Link2.

Dalston
Turkish Mosque (aka Shacklewell Lane Mosque) on Shacklewell Lane. TQ 337 854. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Denmark Hill
St. Matthew. From an old postcard in Steve Bulman's Collection.

Deptford.

Dulwich
Christ's Chapel, which serves Dulwich College. TQ 331 736. © Steve Bulman.

Ealing.

Earl's Court
St. Cuthbert (1884-7) on Philbeach Gardens. TQ 2505 7845. © Martin Richter (2018). Link1. Link2, a long Wikipedia article which includes many photographs. A Google Streetview. Grade I listed.

East Dulwich
Emmanuel Congregational Church (1891, preceded by a tin church 1877). From an old postcard in Steve Bulman's Collection.
St. John the Evangelist. © Christine Bannan. Link.

East Finsbury
Wesley's Chapel, City Road. © Tim Tomlinson. Link.

East Ham.

Eltham
Christchurch (R.C.). Two further views - 1, 2. TQ 432 744. All © Dave Westrap. Link1. Link2.

Erith
Cemetery Chapel, Erith Cemetery. TQ 497 779. © Dave Westrap. Link.

Finchley.

Finsbury Park
North London Central Mosque on St. Thomas's Road. TQ 314 866. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.
Pentecostal Holiness Church and Bible College. © Alan Taylor.

Fitzrovia
All Saints on Margaret Street, a William Butterfield church. From an old postcard in Steve Bulman's Collection. Another view, © Chris Kippin (2019). Link.
All Saints House on Margaret Street used to be a convent of the Sisters of the Poor. The entrance sits in a corner of a narrow lane. Interior view. TQ 292 813. Both © Chris Kippin (2019). Link.
Fitzrovia Chapel on Pearson Square was originally part of the Middlesex Hospital. The rest of the hospital has gone, but the chapel remains. It's grade II* listed, wherein it's dated to 1891-1929. TQ 2926 8165. Link. News item.
Fo Guang Shan Buddhist Temple on Margaret Street. TQ 292 813. © Chris Kippin (2019). Link.

Forest Gate, Forest Hill, Friern Barnet.

Fulham
Munster Park Wesleyan Church. From an old postcard in Reg Dosell's Collection.
St. John at Walham Green. From an old postcard in Reg Dosell's Collection. Link.

Golders Green.

Greenford
Church of the Holy Cross on Ferrymead Gardens. From Christopher Skottowe's Collection, the photo taken by his grandfather in 1938. TQ 1452 8316. Another view, © Christopher Skottowe (1963).  Grade I listed. Adjacent to it stands the new church of 1939, built to service the growing local population of the time. It can be seen here. Link. Grade II* listed.
The Methodist Church on the Ruislip Road, as seen by Streetview in 2021. TQ 1411 8239. Link.
Our Lady of the Visitation (R.C.) on Greenford Road, interior view. © Christopher Skottowe (1968).
St. Hugh on Kensington Road, as seen by Streetview in 2019. Link - it's dated here to 1971. What is now the church hall (to the right of the church in the Streetview) was the original church, dated in the same webpage to 1957.

Greenwich.

Gypsy Hill
Christ Church (1987) on Highland Road, built after a fire destroyed the old church (1862), of which only the tower survives, now converted to flats. Both © Gerard Doherty (2011). Link.

Hackney
The tower is all that remains of St. Augustine. © Rob Brettle. Link.

Hammersmith
Holy Trinity (1852) on Brook Green. © Gerard Doherty (2013). Link.
St. Augustine (R.C.) on Fulham Palace Road. Another view. Both © Gerard Doherty (2013). Interior view, © John Balaam (2013). Link1. Link2.
St. Paul (1884) on Queen Caroline Street. © Gerard Doherty (2013). Another view, © John Balaam (2013). Link.

Hampstead.

Hampton Hill
St. James on St. James's Road. The original postcard needed to be heavily processed to produce a still poor image, but it does show the impressive spire. The postcard dates from about 1905. TQ 140 714. © Jackie Blackman. A useful history here. A 2018 Streetview. Grade II listing, which gives dates of 1864 for the commencement of building, and completion in 1888 when the tower was added.

Hanwell
Our Lady and St. Joseph (R.C.) on Uxbridge Road, and its interior. TQ 1568 8015. Both © Christopher Skottowe (1968). Link.
St. Thomas the Apostle (1933-4) on Boston Road. TQ 1599 7938. © Derek West. Link. Several interior photos can be found by following the links here. Grade II* listed.

Hanworth
St. George. Link to external website.

Harefield
St. Mary on Church Hill. Another view, and the porch. TQ 0533 8959. All © Christopher Skottowe (1963). Another view, dateable to 1938, in Christopher Skottowe's Collection. After WWI, a cemetery was laid out for Australians who had died in the war. A service is still held here annually on Anzac Day. An obelisk to commemorate the Australians was erected in 1921, with an archway to the cemetery following in 1924. Both of these have their own listing - the obelisk (grade II), and archway (also grade II). Another view, © Lesley Ratcliffe (2002). Link, and history. The obelisk and cemetery can be seen here. VCH entry. The brief grade I listing, which mentions fabric from the 12th century, but there was a church here (or, at least, a priest) at Domesday (1086).

Haringey
St. John the Baptist (Greek Orthodox) on Wightman Road and Lausanne Road. TQ 3118 8921. © Michael Bourne. Howard Richter has advised that this was the Anglican St. Peter, and shows as such on the 1980-1 1:2500 O.S. map. We learn from here (scroll to about 1/3 of the way down) that it was originally a tin tabernacle chapel of ease of 1884. This stood a few yards south at about TQ 3119 8917. The present building was built 1897-1905, and damaged during WWII. The congregation merged with that of Christ Church in Tottenham in 1977, and St. John was declared redundant in the following year. The Greek Orthodox Church took over in 1983, and the church has been extensively decorated, which (in part) is the reason for it's grade II* listing.

Harlesden.

Harlington
Baptist Church (1879) on the A437, as seen by Streetview in 2021. TQ 0875 7760. Link. Grade II listed.
St. Peter and St. Paul on St. Peter's Way. Detail from the south doorway. TQ 0880 7821. Both © Christopher Skottowe. Link1. Link2. Grade I listed. For other listed features associated with the church, see here.

Harmondsworth
New Life Destiny Baptist Church stands at the junction of the Hatch Lane and High Street. Older maps label it as Mission Hall. It was seen by Streetview in 2021. It was Baptist at the time of the first Streetview visit, in 2008. TQ 0588 7775. Link.
St. Mary the Virgin. TQ 0569 7781. From an old postcard in Steve Bulman's Collection. A photo from 1959, © Christopher Skottowe. Link1. Link2. Grade II* listing, which says that in this impressive church there is fabric of the 12th, 13th and 14th centuries, with a tower and north chancel aisle of circa 1500.

Harrow and Harrow-on-the-Hill.

Harrow Weald
All Saints. TQ 153 918. © Les Needham (2015). Link. Grade II* listed.
St. Michael and All Angels. TQ 157 907. © Les Needham (2015). Link.
 

Hatch End.

Hayes
Hayes Methodist Church. TQ 098 798. © Mehmood Naqshbandi (2009). Link.
Immaculate Heart of Mary (R.C.). Another view. TQ 096 798. Both © Mehmood Naqshbandi (2009). Link.

Hendon.

Heston
St. Leonard (interior view only). Previously in the "Unknown" section, thanks to Janet Gimber for the identification. From an old postcard in Steve Bulman's Collection.

Highbury, Highgate.

Hillingdon
St. John the Baptist on Royal Lane and Uxbridge Road. A modern view is available on Streetview. The oldest remaining fabric is the C13 chancel arch. The tower is of a re-build of 1629. TQ 069 829. From an old postcard in Steve Bulman's Collection. Link1. Link2. The church has some fine monuments. Grade II* listed.
 

Holborn
Holborn Muslim Community Association on Brookes Court. TQ 311 817. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.
Kingsgate Baptist Church on Catton Street, now closed. Situated in a very narrow lane, this church is difficult to photograph. Another view. Both © Gervase N. E. Charmley.
St. Alban the Martyr on Brookes Street. Another view. TQ 312 818. Both © Mehmood Naqshbandi. Link.
St. Peter (R.C., opened 1863) on Clerkenwell Road. Two interior views - 1, 2. All © Chris Stafford (2013). Link.

Hornchurch
St. Andrew. From an old postcard in Reg Dosell's Collection. Link.

Hornsey and Hornsey Rise.

Hounslow
Hounslow Jamia Masjid and Islamic Centre on Wellington Road South (interior view). TQ 130 746. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Hoxton
Salvation Army. © Rob Brettle.

Ilford
Ilford Islamic Centre (aka Islamic Society of Britain - Ilford Branch, Association of Ilford Muslims) on Albert Road. TQ 440 863. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Isle of Dogs.

Islington.

Kennington
St. John the Divine on Vassal Road (1870-74). Unlike many other London churches damaged during WWII, this one was deemed worth restoring to its pre-war condition. It's by G. E. Street. TQ 316 771. © Chris Kippin (2018). Link (with a useful history here). Grade I listed.

Kensal Green and Kensal Rise.

Kensal Town
Queen's Park U.R.C. on Harrow Road and Third Avenue was built in 1990 on the site of a previous chapel. The building had a relatively short active life, and closed in 2016 or 2017. TQ 244 824. © Gervase N. E. Charmley. Estate Agents sale notice from 2017.

Kensington including South and West Kensington.

Kentish Town
St. Silas the Martyr. © John Salmon.
Unitarian Church (interior view) on Clarence Road. © unitarian.co.uk. This, and many other old engravings on this website, are reproduced from the downloadable books on the Unitarian Church Headquarters website here. The books are Pictures of Unitarian Churches by Emily Sharpe (1901) and the 1914 edition of Nonconformist Church Architecture by Ronald P. Jones M.A, (Oxon), and the images are reproduced by kind permission of James Barry of Unitarian Church Headquarters. My appreciation also to Mike Berrell for his efforts in this regard.

Kenton
Baptist Church. TQ 175 897. © Les Needham (2015). Link.
Methodist Church. TQ 173 887. © Michael Bourne.
The former St. John (Presbyterian) which closed in late 2013. Now Haridham Hindu Temple. © Les Needham (2015).
St. Mary the Virgin. TQ 171 887. © Michael Bourne. A carved wooden screen, from an old postcard in Paul E. Barnett's Collection. Link.

Kew
St. Anne. From an old postcard (franked 1905), Bulman Collection. Link.

Kilburn.

Kingsbury
Holy Innocents. TQ 208 885. © Michael Bourne.
St. Andrew on Old Church Lane. © Francis P. Henry. Link1 (not working when I tried). Link2.

Kingston-upon-Thames, King's Cross.

Ladywell
St. Mary the Virgin on Lewisham High Street - built 1774 and restored 1881. Another view. Link.
Mountain of Fire and Miracles Ministry (non-denominational) on Ladywell Road, building built in 1891. Link. All © Gerard Doherty (2010).

Lambeth
St. Anne and All Saints. © Mike Rice.

Lee
St. Margaret on Lee Terrace, built 1839-41. From an old postcard in Steve Bulman's Collection. Two modern views - 1, 2, both © Gerard Doherty (2010). This church is also listed under Lewisham, as Gerard advises that although the official website says it is in Lee, the postcode is for Lewisham. Link1. Link2.

Lee Green
Emmanuel Pentecostal Church on Lee High Road. © Gerard Doherty (2010).
Lee New Testament Church of God on Lee High Road. Janet Gimber has been looking at old maps, and determined that this building was built as Bible Christian, and was later United Methodist, then Lee Methodist Chapel. © Gerard Doherty (2010). Link.

Lewisham.

Leyton
Cornerstone Church (1998) on Canterbury Road stands on the site of St. Paul. In the 1990's, the parish had two churches, St. Catherine and St. Paul. St. Catherine's Church was sold, and became Elim Church (for which, see Leytonstone, below). The combined congregation then met in St. Paul's, which was soon demolished, and the present church built on the site. There must be photos of the demolished St. Paul, but I've been unable to find one on the web. TQ 385 881. © Chris Kippin (2019). Link.
Jamia Masjid Ghosia (aka Walthamstow Mosque, Waltham Forest Islamic Association) on Lea Bridge Road. Interior view. TQ 372 878. Both © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Leytonstone
Leytonstone Mosque (aka Leytonstone Islamic Association) on Dacre Road. TQ 396 874. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.
Elim Pentecostal Church, the former St. Catherine. TQ 387 877. © Peter Morgan (2016). Link.
United Free Church. Another view. TQ 388 875. Both © Peter Morgan (2016). Link.

Limehouse
Our Lady Immaculate and St. Frederick (R.C.) on Commercial Road. The church website dates it to 1934. TQ 3651 8108. © Chris Kippin (2022).
St. Anne on Three Colt Street. A Hawksmoor Church, it's grade I listing dates it to 1712-30. Two more views - 1, 2. All © Chris Kippin (2022). The tower, and the west doorway, both © Christopher Skottowe (1960). TQ 3678 8104. Link.
Unitarian Church, Durning Hall, on Elsa Street. © unitarian.co.uk. This, and many other old engravings on this website, are reproduced from the downloadable books on the Unitarian Church Headquarters website here. The books are Pictures of Unitarian Churches by Emily Sharpe (1901) and the 1914 edition of Nonconformist Church Architecture by Ronald P. Jones M.A, (Oxon), and the images are reproduced by kind permission of James Barry of Unitarian Church Headquarters. My appreciation also to Mike Berrell for his efforts in this regard.

Little Stanmore
St. Lawrence Whitchurch. Previously in the "Unknown" section, and identified by Janet Gimber, the postcard (in Steve Bulman's Collection) caption simply says "Whitchurch". Link1. Link2.

Manor Park
Anjuman-e-Islamia Jamia Mosque, on High Street North. TQ 423 845. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.
Manor Park Christian Centre (1906, Evangelical Alliance) on High Street North. A Tamil congregation also meets here. © P. L. Kessler (2013) / The History Files. Link.
The former Manor Park Congregational Church stands at the junction of Strone Road and High Street. © P. L. Kessler (2013) / The History Files. Peter advises (here, #5) that it was originally Little Ilford Church of 1904, successor to a tin tabernacle nearby on Coleridge Avenue, and that by 2013 it had become home to Church of God (Pentecostal). I can't find any on-line presence in 2021, so it may have changed ownership.
Manor Park Spiritualist Church stands on Shrewsbury Road and Strone Road. TQ 4169 8479. © P. L. Kessler (2013) / The History Files. Link.

Marylebone, Mayfair.

Merton
St. John the Divine on High Path. The tower and the interior. TQ 258 698. Link. St. Mary on Church Path. Interior view. TQ 251 694. Link. All © Chris Kippin (2018).

Mile End
East London Tabernacle Baptist Church on Burdett Road. TQ 3648 8237. © Chris Kippin (2022). Link. The history page dates it to 1954, replacing its predecessor of 1871, which was destroyed in 1944. It also has photos of the older church.
Latimer Church on Ernest Street. It post-dates a map of 1948. TQ 3603 8217. © Chris Kippin (2022). Link.
St Benet’s Chapel, part of Queen Mary’s College, stands on Mile End Road at TQ 3611 8231. The Chaplaincy website dates it to 1962. © Chris Kippin (2022). Old O.S. maps show that it stands on the site of St. Benet's Church, dated here to 1872, which fell victim to bombing in 1940. A photo of it is available here. Nearby stood a Mortuary Chapel, at TQ 3613 8234, the site of which now lies beneath the building to the chapel's right, in this Streetview from 2021. It stood at the southern edge of a large cemetery, labelled on the 25" O.S. map of 1897 as Jews' Burial Ground. On its northern border was another Mortuary Chapel at TQ 3599 8246. Its site hasn't been seen by Streetview.
Some fragments (1, 2) of St. Faith remain, attached to another building (or was it part of the church itself?) on Shandy Street. It's dated here to 1891, and was "badly damaged by bomb blast" in 1940. I haven't been able to find a photo of the church. TQ 3607 8203. Both © Chris Kippin (2022).
St. Paul - entry removed to Bow Common.
Shahjalal Mosque and Cultural Centre on Duckett Street. As Chris observes, it has the look of a temporary site. TQ 3602 8196. © Chris Kippin (2022). Link.

Millwall.

Mitcham
Church of Jesus Christ of Latter-day Saints on London Road. © Paul E. Barnett (2014).
St. Peter & St. Paul. From an old postcard (franked 1905) in Steve Bulman's Collection. Link.

Muswell Hill
U.R.C. TQ 283 896. © Michael Bourne.

New Cross
Hatcham Evangelical Church. © Alan Taylor.
House of Bread (Church of God of Prophecy) on Kitto Road. © Gerard Doherty (2010). Link.
St. Catherine on Pepys Road (1892-4). © Gerard Doherty (2010). Link.

North Finchley
St. Alban (R.C.). TQ 260 921. © Michael Bourne.

Northolt
Kingdom Hall of Jehovah's Witnesses on
Hawtrey Avenue and Old Ruislip Road, as seen by Streetview in 2021. TQ 1164 8329.
The Methodist Church is located just off Target Roundabout on Church Road, at TQ 1262 8398. It was seen by Streetview in 2021. Link.
Northolt Bohra Mosque (Masjid-ul-Husseini) on Rowdell Road, as seen (distantly) by Streetview in 2021. TQ 1356 8391. Link, wherein it's dated to 2010; there's also a good photo.
St. Bernard (R.C.) on the A312, as seen by Streetview in 2021. TQ 1305 8419. Link.
St. Mary. TQ 1320 8404. Another view. Both © Christopher Skottowe (1963). Link1. Link2. Grade I listed.

Northwood.

Notting Hill
Project Gutenberg has "The Church Index:  Part 1", by the Rev. William Pepperell, 1872 edition. It includes many drawings of the churches of Kensington, South Kensington, Brompton and Notting Hill.
St. John the Evangelist. From an old postcard in Reg Dosell's Collection. Link.
St. Peter, on Kensington Park Road. One of Judy Flynn's postcards, previously in the Unknown section, the caption reading St. Peters Church W. Identified by Simon Davies and Michael Day. Link. Grade II* listed.

Nunhead, Paddington, Peckham.

Penge
Congregational Church. From an old postcard (franked 1932) in Steve Bulman's Collection. Link.

Pentonville.

Perivale.
St. Mary. Older maps show this as St. James, but the correct medieval dedication was re-discovered in 1951. It was declared redundant in 1972 and now serves as a music centre. TQ 164 828. © Christopher Skottowe (1964). Link1. This sub-page leads to a useful history, and many photos. Link2. Grade I listed. The lych-gate and a tomb have their own listings, and links to them can be found here.

Pimlico.
St. Barnabas. Another view. Both © Gervase N. E. Charmley. Link.
St. Gabriel (1852-3) on Warwick Square. TQ 290 783. © Chris Kippin (2019). Link.
St. Saviour on Lupus Street. TQ 95 782. © Chris Kippin (2018). Interior view, © Chris Kippin (2019). Link. Grade II listed.

Pinner.

Plaistow
Church of God in Christ Bethany Assembly (Congregational Independent) on Chesterton Road, as seen by Streetview in 2019. TQ 4011 8295.
East London Cemetery on Grange Road has two Mortuary Chapels, Church of England at TQ 3984 8283, and a Non-denominational (now the Crematorium Chapel) a few yards to the west at TQ 3982 8283. This photo (© P. L. Kessler / The History Files) must be of the latter.
House of Faith or Elim Way Fellowship on Elim Way. A so-far unidentified church stood on the site in 1939; on later maps up to 1950 it's labelled as Ruin, presumably a victim of the war. By 1954 an Elim Hall had been built, and this is probably the same building on the site today. TQ 3991 8259. © P. L. Kessler / The History Files. Link.
St. Martin of Tours (1894) on Boundary Road, originally a Mission Church. TQ 4141 8313. © P. L. Kessler / The History Files. Link. Grade II listed.
St. Mary the Virgin (1981) on May Road. TQ 4054 8336. © P. L. Kessler / The History Files. Link. It replaced an earlier St. Mary a few yards to the south, at TQ 4053 8334, demolished in or before 1981. It can be seen here. St. Phillip & St. James. From an old postcard in Steve Bulman's Collection.
The former Salvation Army Citadel on Upper Road. Circa TQ 4016 8324. © P. L. Kessler / The History Files. For more details see Peter's entry here, #5.

Plumstead
St. Margaret. One of London's lost churches, having been demolished in 1974. From an old postcard (franked 1907) in Steve Bulman's Collection. As advised by Mike Berrell, this website confirms the identification. A mystery photo previously in the "Unknown" section came from Mark Wilson who discovered a photo album in a skip in Dagenham of a church interior, which has a seven-light East window with rose window above. The rather awkward transition from the rose to the junction of the 2nd and 3rd, and 5th and 6th lancets are unusual. The rest of the album can be viewed here, and includes photos including the iron-strapworked door, the only exterior views. Photos are on an external website. Solved by Graham Maxwell, and this link provides the proof.

Poplar
All Saints stands between Newby Place and Bazely Street. TQ 3808 8094. From an old postcard in Reg Dosell's Collection. Two modern views - 1, 2, both © Chris Kippin (2022). Link. Grade II listed. Also grade II listed are churchyard walls, gatepiers and railings.
Calvary Charismatic Baptist Church on East India Dock Road and Annabel Close. Another view. TQ 3754 8100. Both © Chris Kippin (2022). Link.
Also on Annabel Close is Emery Hall, where Poplar Methodist Church meets. It was seen by Streetview in 2020. TQ 3757 8102. Link.
St. Mary and St. Joseph (R.C.) on Upper North Street, Pekin Street and Canton Street. Another view. TQ 3746 8109. Both © Chris Kippin (2022). Link. The history page dates it to 1951-4, successor to a church destroyed by bombing in 1940. It had been built on Canton Street commencing in the 1840's, completed in 1856, and a photo is available here. Its site was used to build a school, but this has since been demolished, and the site redeveloped for housing, except for a garden, seen here in a Streetview from 2021 (the present church is at the extreme left). TQ 3744 8114. Link. There had been two earlier chapels.
The former St. Matthias on Woodstock Terrace. The only surviving Commonwealth church in London, there's a good history here (where it's closure is dated to 1976), and an interior photo here. TQ 3777 8082. © Chris Kippin (2022). Grade II* listed. Several tombs are listed too, here.

Putney
St. Mary the Virgin, the parish church on Putney High Street, as seen by Streetview in 2018. Link. This source - The Burial Grounds of Putney (pdf) - has much information on St. Mary, as well as on other cemeteries in the area. Grade II* listed.

Richmond
St. John the Divine. A postcard from Judy Flynn, previously in the Unknown section. Note the large triptych. Printed at lower right is Richmond S.W. Janet Gimber identified it as St. John the Divine, Richmond, Greater London, and provided this link for comparison (scroll down the page). Link.
St. Mary Magdalene. From an old print in Shirley Beaumont's Collection. A modern view. © Shirley Beaumont. Link.

Romford, Rotherhithe.

St. Giles - see Bloomsbury and St. Giles.

St. Mary Cray
Temple Church. Dating from 1851, and replacing an earlier church, this church too was demolished (in 1954), following damage in WWII. Yet another church was built on the site (which today is U.R.C.). From an old postcard, Geoff Watt's Collection. Link.

St. Paul's Cray
St. Paulinus (redundant). From an old postcard in Steve Bulman's Collection.

Sanderstead
All Saints. From an old postcard, Geoff Watt's Collection.

Savoy
The Queen's Chapel of the Savoy. TQ 305 807. © Steve Bulman. Link.

Shadwell
St. George in the East on Cannon Street Road. TQ 3474 8080. © Chris Kippin (2022). Link. Grade I listed.
St. Mary on Cable Street. TQ 3537 8095. © Chris Kippin (2021). Link. Grade II listed, wherein it's dated to circa 1850..
St. Paul on High Street. Its grade II* listing dates it to 1817-20. TQ 3528 8074. © Chris Kippin (2021). Link.
Strangers Rest Evangelical Church on The Highway. TQ 3460 8074. © Chris Kippin (2021). Link.

Shepherd's Bush
St. Stephen. From an old postcard in Steve Bulman's Collection.

Shoreditch
The former St. Luke on Old Street, a Nicholas Hawksmoor church, now used by the London Symphony Orchestra. Opened in 1733, and closed in 1964. Another view. Both © Peter Morgan (2016). Link.
The former St. Michael & All Angels, now used as a commercial building. © Mark Summers.

Sidcup.

Silvertown
St. Mark on North Woolwich Road. TQ 419 802. © Ted Bagot (who, as a resident of New Zealand, is unquestionably the most distant contributor to this project). This link supplies dates as follows - preceded by an 1857 "iron building", St. Mark was designed in 1862 by S. S. Teulon, was closed in 1974, and was derelict in the 1980's. More history here and here. It is now in use as Brick Lane Music Hall.

Soho.

Somers Town
St. Aloysius (R.C.), built 1966-8, stands on the corner of Eversholt Street. and Phoenix Road. © Peter Hobday.
St. Mary, built 1822-6 (or 1824-7, according to source consulted), on Eversholt Street. TQ 295 830. © Peter Hobday. Two additional views - 1, 2, both © John French. Link. Grade II listed.
St Pancras Old Church, Pancras Road. TQ 298 834. © Bill McKenzie. Three further views - 1, 2, 3 - all © Mehmood Naqshbandi. Two interior views - 1, 2 and the altar, all © John Balaam (2012). Link.

Southall
Central Jamia Masjid on Montague Waye. Interior view. TQ 122 791. Both © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Southwark.

Spitalfields
Christ Church. © Aidan McRae Thomson. Link.

Stamford Hill
Described on this old postcard (Steve Bulman's Collection) only as "Gibbon Church", Janet Gimber has discovered that it was Stamford Hill Congregational Church, demolished in 1966 to make way for a library. The Gibbon reference is to Rev. James Morgan Gibbon.
Masjid E Quba (or North London Mosque Trust) on Cazenove Road. Interior view. TQ 340 869. Both © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Stanmore.

Stepney
St. Dunstan and All Saints on Stepney High Street. Another view, and the interior. TQ 3598 8159. All © Chris Kippin (2022). Link. Grade I listed.
St. Mary and St. Michael (R.C., 1857) on Commercial Road. TQ 3526 8121. © Chris Kippin (2022). Link has some interior photos. The history page says that it was badly damaged by one of the last V2's to fall on London.
The former Stepney Methodist Church, on Commercial Road. Named as Central Hall (Wes.) on older maps, only the facade survives. It's dated here to 1907. TQ 3588 8119. © Chris Kippin (2022).
Synagogue of the Congregation of Jacob on Commercial Road. Circa TQ 351 813. © Chris Kippin (2022). Link.

Stockwell
Khatemun-Nabeyeen Mosque (aka Khatme Nubuwwat Centre) on Stockwell Green. TQ 307 760. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.

Stoke Newington
Azizia Mosque on Stoke Newington Road. TQ 335 858. © Mehmood Naqshbandi, and reproduced from his website Muslims in Britain.
Kingdom Hall of Jehovah's Witnesses. © George Weston.
One of Judy Flynn's postcards (previously in the Unknown section) - labelled as St. John the Evangelist and Queen's Road. From the publisher on the back (Hickox & Son, Finsbury Park (London)), Judy thinks that this is the demolished church of St. John which stood on Gloucester Drive and Queen's Drive, Stoke Newington, now replaced by a modern church, visible on Google Earth here. Certainly the boundary wall looks similar. Can you confirm Judy's suspicions? Brian Curtis suspects the identification is sound, and has supplied links to the following evidence - description (the central tower which it mentions must be hidden by the gable end), maps on http://www.old-maps.co.uk/maps.html show that the situation of the church at the junction of the two roads is identical, and the information that the Queen's Road was changed to Queen's Drive after WWII. Janet Gimber concurs, and has drawn my attention to the Google Earth aerial view, and old maps, which leaves no doubt.

Stratford
St. John. From an old postcard (franked 1916), Bulman Collection. Another old postcard view, from Reg Dosell's Collection.

Streatham
St. Alban on Pretoria Road. © Jennifer Murray. Link.
South London Islamic Centre on Mitcham Lane. © Mehmood Naqshbandi (1990), and reproduced from his website Muslims in Britain.
Streatham Methodist Church. © Ray Harrington-Vail.

Streatham Hill
St. Margaret on Cricklade Avenue. © Tim Lomas. Link.
St. Simon and St. Jude (R.C.) on Hillside Road. © Tim Lomas. Link.

Sudbury
St. Andrew. Interior view. The Old Church now serves as the Church Hall. Another view. TQ 163 858. All © John Salmon. More of his photos of this church are available on Geograph. Another view, © Francis P. Henry. Link.
St. George (R.C.) on Harrow Road. Interior view, a window, and statue of the saint. All © Francis P. Henry. Link.

Surbiton
St. Mark. From an old postcard (franked 1908), Bulman Collection. Link.

Sutton
All Saints at Benhilton. From an old postcard (franked 1916), in Steve Bulman's Collection. Link.
Christ Church, on Christchurch Park, consecrated 1887. © Gerard Doherty (2011). Link.

Sydenham
St. Bartholomew on Westwood Hill, built 1827-1832, consecrated 1832, and re-dedicated in 1858. TQ 351 717. © Gerard Doherty (2011). A 2018 Streetview is available here. Link. Grade II* listed.
Former Swedenborgian Church (1883, now converted to flats) on Waldegrave Road. Another view. TQ 3404 7036. Both © Gerard Doherty (2011). Link. Streetview gives a useful alternative view. Grade II listing, which mentions that this is an early example of the use of concrete in a church building.

Tooting.

Totteridge
Union Church (U.R.C.). TQ 255 931. © Michael Bourne.

Turnham Green
Christ Church on Town Hall Avenue, a George Gilbert Scott church of 1841-3. TQ 205 784. © Martin Richter (2015). Link. Grade II listed.

Twickenham
The former Methodist Church is on Queen's Road, and was seen by Streetview in 2022. According to its Wikipedia entry, its dates are 1880-2016. It implies that it was Wesleyan. TQ 1612 7327.
St. Mary on Church Street. TQ 1649 7333. From an old engraving in the Colin Waters Collection. A modern view (with flood!). © Mike Rice. Two more views - 1, 2, and three of the interior - 1, 2, 3, all © Christopher Skottowe (1966). Link. Grade II* listed.

Upper Norwood
See Crystal Palace.

Upton Park
Islamic Centre on Selwyn Road. TQ 405 837. © Mehmood Naqshbandi (1990), and reproduced from his website Muslims in Britain.

Uxbridge
St. Andrew on Hillingdon Road, a Sir George Gilbert Scott church of 1864-6. TQ 060 838. From an old postcard in Steve Bulman's Collection. Compare with a modern Streetview here. The associated vicarage is also listed, as Grade II, and it, and the church, can be seen in a Streetview here. Link. Grade II listed.
St. Margaret on High Street. TQ 055 841. From an old postcard in Steve Bulman's Collection. A modern view, © Paul E. Barnett (2014). Link1. Link2. Grade II* listing, which notes that this was a chapel of ease of St. John the Baptist at Hillingdon, until the early 19th century.

Wallington
Holy Trinity on Maldon Road. Another view. TQ 288 645. Both © Chris Kippin (2018). Link.

Walthamstow
Greenleaf Road Baptist Church. © Christopher Skottowe (2017). Link.
Masjid-e-Umer Trust on Queens Road. © Mehmood Naqshbandi (1990), and reproduced from his website Muslims in Britain.
Ruach City Church on Greenleaf Road. © Christopher Skottowe (2017). Link.
St. Mary. From an old postcard in Steve Bulman's Collection.
Unitarian Iron Church, Truro Road, © unitarian.co.uk. This, and many other old engravings on this website, are reproduced from the downloadable books on the Unitarian Church Headquarters website here. The books are Pictures of Unitarian Churches by Emily Sharpe (1901) and the 1914 edition of Nonconformist Church Architecture by Ronald P. Jones M.A, (Oxon), and the images are reproduced by kind permission of James Barry of Unitarian Church Headquarters. My appreciation also to Mike Berrell for his efforts in this regard.

Wanstead
Christ Church from an old postcard in Steve Bulman's Collection.
Wanstead Parish Church is not identified by name on this old postcard in Steve Bulman's Collection, but it is almost certainly of St. Mary, the description of which in Betjeman is very close to the picture. (Thanks to Graeme Exall for confirming that this is indeed St. Mary, and for this Link).

Wapping
The former St. John stands at the corner of Scandrett Street and Green Bank. Badly damaged during the blitz, it was re-built as apartments on the same floor plan. The grade II listing says that the tower and some walls survive from the church. Chris was advised that there is a chapel on the ground floor, serviced from St. Peter's, Wapping. TQ 3465 8012. © Chris Kippin (2022).
Next door to St. John on Green Bank is St. Patrick (R.C., 1879). The interior. TQ 3471 8012. Both © Chris Kippin (2022). Link. Grade II listed.
St. Peter on Wapping Lane, commonly referred to as St. Peter's, London Docks. Another view, and two of the interior - 1, 2. TQ 3487 8037. All © Chris Kippin (2022). Link. Grade I listed, wherein it's dated, rather vaguely, to "late C19". Its Wikipedia article says 1856-1939.

Waterloo
The former Christ Church on Waterloo Bridge Road, of which only the spire survives. A distant view (from the London Eye). TQ 311 793. © Steve Bulman. Another view, and the foundation stone for 1873, which also mentions that the church was successor to "Surrey Chapel". The church was bombed in WWII, and the top of the spire was damaged. The spire was restored, but the body of the church was demolished. An office block was built on the site - this contains a church known as Oasis Church (link). All © Chris Kippin (2018). An old engraving of the church is available here.
St. Andrew stood on Short Street, and was built in the later 1950's as successor to St. Andrew, Lambeth. Declared redundant in 2003, it was demolished the following year, and the replacement building includes a church and community space. A short history is available here (.pdf), which includes a photo of the former church. TQ 314 799. © Chris Kippin (2018).
St. John the Evangelist on Waterloo Road (1824, re-dedicated 1951). Another view. Both © Gerard Doherty (2011). Link.
St. Patrick (R.C.) on Cornwall Road. The church is on the first floor. Another view. Both © Gerard Doherty (2011). Link.

Wealdstone.

Welling
Welling Evangelical Free Church on Upper Wickham Lane and Balliol Road. This shows on a map of 1909 as Primitive Methodist. It was relatively new at this time, as it doesn't show on the edition of the late 1890's. TQ 4670 7635. © Alan K. Taylor (1985). A more recent view is available on Google Streetview here (2018). Almost exactly opposite in a terrace, stands a Redeemed Christian Church of God (Streetview). Very close by is S and R Domestic Appliances (Streetview). This stands on the site of (and may include fabric of) Bethel Baptist Chapel, which shows on a map of 1864. This was Wesleyan Methodist by the time of the 1896 map.

Wembley.

West Drayton
St. Catherine of Alexandria (R.C.) on The Green was seen by Streetview in 2021. Its grade II listing dates it to 1868. TQ 0585 7947. Link.
St. Martin has fabric dating back to the 13th century. TQ 0616 7954. From an old postcard in Steve Bulman's Collection. Another view, © Christopher Skottowe (1959). Link1. Link2 has much on the monuments and brasses, and also a photo of two Burne-Jones windows. Grade II* listed.
The Chapel (Baptist) on Swan Road, as seen by Streetview in 2021. TQ 0601 7975. Link. Older maps mark a Baptist Chapel on Money Lane. It survives, and has a date-stone for 1827. It was seen by Streetview in 2018. TQ 0567 7942. This source says that it was also home to a congregation of Old Catholics, from no later than 1950 to no later than 1958.

West Ealing
St. John, on Mattock Lane. © Christopher Skottowe (2019). Link.

West Ham.

West Kensington - see Kensington.

West Twyford
St. Mary on Broadmead Gardens. From an old Christmas card in Christopher Skottowe's collection. A photo taken from a similar position in 1935, and two of the interior - 1, 2, all taken by Christopher's grandfather. Another old photo is also from Christopher's Collection, and can be dated to before 1908. Link. Its ancient history can be seen here; more recently, Christopher advises that a new church was built in 1958 (incorporating the old church as the Lady Chapel), and refurbished in 2009-10. The prior images in this entry pre-date these changes. The 2019 Streetview shows the present church. Note also the Seventh-day Adventist Church to its left, better seen here. A photo of the new church was an entry on the Unknown's page, and solved by Janet Gimber. West Twyford's Wikipedia entry says that the 2010 renovation saw the newer church changed into a community hall, with the old chapel re-dedicated as the church. © Christopher Skottowe.

Westcombe Park
St. George, on Kirkside Road. Another view. Both © Gerard Doherty (2011). Link.

Westminster.

Whitechapel.

Willesden and Willesden Green
Beulah Apostolic Church on Conley Road and Church Road. This is a recent build, as the 2012 Streetview shows a different building, though still Beulah Apostolic. TQ 2138 8454. The earliest map I have access to which shows a church on this site is of 1893-4, where it's labelled as Chapel (unreadable). It carries on being labelled just as Chapel, until a map of 1896 labels it as Chapel (Disused). A 1915 map has it as (I think) Mission Hall, 1935 as Hall, 1955 and 1972-6 as Willesden Evangelical Church, and 1988-96 as Ch. © Derek West.
Central Mosque of Brent on Morley Walk, Station Parade. © Mehmood Naqshbandi (1990), and reproduced from his website Muslims in Britain.
Elim Church on Willesden High Road. Commonly known as Church on the High Road, this was originally a Congregational Chapel, the second in the area, and it pre-dates an O.S. map of 1893. TQ 2210 8475. © Judy Flynn (2014). Link. The predecessor Congregational Chapel seems to have been built some time before 1850. It appears on a map of that year, but is un-named; however, a building with the same footprint is identified on a map of 1865. Demolished at some unidentified date, the site can be seen here on a Streetview, and it would have stood between the trees and the tall green lamp-post. In the same 2015 Streetview can be seen Bethlehem Ministry, of the Assemblies of God, in a former cinema. It can also be seen here in 2014. A 2018 Streetview shows the building boarded up, though whether this was because of closure or refurbishment work is unknown at present. The grid reference for this is TQ 2217 8480. Howard Richter advises that there was also a Salvation Army Citadel on the same road, about opposite to the Ministry, and now replaced by a block of flats (which can be seen by rotating the 2018 Streetview)
St. Mary. From an old postcard in Steve Bulman's Collection.

Wimbledon
Bethel United Church of Jesus Christ (Apostolic) on Kohat Road. Another view. TQ 259 712. Both © Mehmood Naqshbandi.
Buddhapadipa Thai Temple. Another view. Both © Jennifer Murray. Link.
Gap Road Cemetery Chapel. Another view. TQ 256 715. Both © Mehmood Naqshbandi (2009).
Kingdom Hall of Jehovah's Witnesses on Plough Lane. Another view. TQ 259 713. Both © Mehmood Naqshbandi. It's evidently undergone a re-modelling as its appearance had changed by the time the Streetview van went past in 2019.
Wimbledon Mosque on Durnsford Road. Interior view. Both © Mehmood Naqshbandi (1990), and reproduced from his website Muslims in Britain.

Woodside Park
St. Barnabas. TQ 256 924. © Michael Bourne.

Woolwich.

Worcester Park
St. Philip. From an old postcard in Reg Dosell's Collection. This link says that the congregation now shares use of the local Methodist church for its services, so St. Philip may no longer exist - can you confirm? Janet Gimber has advised that the church was partially demolished in 1978, with the remainder following in 1984. Further details here.