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.
Islington index
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1895/Francis Joseph Green/wine &c. retailer/../../Post Office Directory *
1899/Alfred Sherrard/wine &c. retailer/../../Post Office Directory *
1901/Alfred Sherrard/Licensed Victualler/47/Holborn/Census *
1901/Elizabeth A. Sherrard/Wife/42/Southwark/Census
1901/Alfred B. Sherrard/Son, Boy Copyist (Patent Office)/15/Holborn/Census
1901/Sidney W. Sherrard/Son/14/Holborn/Census
1911/Percival James Dibbs/Off Licence Keeper/28/Deptford, Kent/Census *
1911/Ellen Elizabeth Dibbs/Wife, Assisting in the Business/27/St Pancras,
Middlesex/Census
1915/Percival James Dibbs/wine retailer/../../Post Office Directory *
* Provided by Ewan