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

Soho on Wikipedia.

The French Protestant Church (1890's) on Soho Square, successor to an earlier church in Threadneedle Street. Another view. TQ 2964 8128. Both © Martin Richter (2015). Link1. Link2.

Orange Street Congregational Church, on Orange Street, was first built as a French Reformed Church, which was demolished, and the present building dates from 1929. © Gervase N. E. Charmley. Link.

Radha Krishna Temple on Soho Street. TQ 2965 8132. © Martin Richter (2015). Link1. Link2, which says the present building has been in use by the temple since 1979.

St. Anne. © Bill McKenzie.

St. Patrick (R.C., 1891-3). It replaced an C18 building which had been used by the Catholics since 1792. Howard Richter has pointed out that the sources for this date are the VCH (here) and the church website (here), and this is contradicted by the Grade II* listing, which says 1802. TQ 2974 8126. © Martin Richter (2015). Link (with interior photos).

Unitarian Chapel on Little Portland 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.