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 Giles pub history index
A listing of historical public houses, Taverns, Inns, Beer Houses and Hotels in St Giles in Fields, London. The St Giles in Fields , London listing uses information from census, Trade Directories and History to add licensees, bar staff, Lodgers and Visitors.
Residents at this address
1851/James Mills jun/../../../Kellys Directory
1851/James Mills/Licensed Victualler/31/Derby/Census
1851/William Gabriel/Waiter/36/Devonport, Devon/Census
1851/Elizabeth Gabriel/Housekeeper/32/Portsmouth, Hampshire/Census
1851/Jane Taylor/Domestic Servant/19/Stonehouse, Devon/Census
1851/Elizabeth Surguy/Visitor/10/Walworth, Surrey/Census
1851/Ellen Surguy/Visitor/2/Walworth, Surrey/Census
1856/Samuel Izant/../../../Post Office Directory
1861/Samuel Izant/Tavern Keeper/38/Great Elm, Somerset/Census
1861/Rebecca Izant/Wife/50/Langley, Buckinghamshire/Census
1861/Walter Izant/Son/8/City of London/Census
1861/Ann Way/Kitchenmaid/23/Brighton, Sussex/Census