Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex. If you can contribute to the site, send me some details to Kevan, along with some description of the specific property.
St George Hanover Square pub history index
A listing of historical London public houses, Taverns, Inns, Beer Houses and Hotels in St George Hanover Square
Residents at this address.
Lodge of Fortitude Freemasons membership initiated April 13th 1829, Redmond Bryant, Victualler, Conduit street, from 1828 to 1829
1833-34/Bryants Hotel, Redmond Bryant, 22 Conduit street, Regent street/../../Pigot's Directory
A chemists by 1842.