By J.P. Gandy Deering and dating from 1824-28. It closed as a church in 1973 and was until recently, an events venue called Number One Mayfair (upper two images).
Not far from Piccadilly is this church of 1865 by F & H Francis. It is now the base for an evangelical Anglican plant. A fire in 1906 led to a rebuilding by R.L. Hesketh
A little way south of Oxford Street it was originally built as a Congregational Chapel in 1889-91 and designed by Alfred Waterhouse. It became an eastern rite Catholic church in 1967.
Originally a proprietary (i.e. private) chapel in Mayfair. The architect is probably Benjamin Timbrell and it was built 1730-31. The chancel was seperated off with a screen to form a lady chapel in 1912-13
A large Roman Catholic church in Mayfair, it is the Jesuit’s English headquarters. It was built by J.J. Scoles 1844-49. Outer aisles were added in 1876-78 by Henry Clutton and 1898-1903 W.H. Romaine-Walker.