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.
Clerkenwell pub history index
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1789/John Harper/victualler/../../Sun Fire Office records held at the London Metropolitan Archives *
1809/John Gough, victualler, 50 Ray street, Clerkenwell/../../Holdens Directory
1811/Jane Preston, the White Horse, Ray street, Clerkenwell/../../Holdens Directory
1818/Joseph Thomas Huggins/victualler, White Hart/../../Sun Fire Office records held at the London Metropolitan Archives *
1819/Joseph Thomas Huggins/victualler/../../Sun Fire Office records held at the London Metropolitan Archives *
1836/William Hembry Sharpe/victualler/../../Sun Fire Office records held at the London Metropolitan Archives *
1839/Edward Marke/../../../Pigots Directory
1846/Mrs Elizabeth Cannon, White Horse, 51 Ray street, Clerkenwell/../../Post Office Directory
1848/Mrs Elizabeth Cannon/../../../Post Office Directory
1851/Mrs Elizabeth Cannon/../../../Kellys Directory *
1851/Elizabeth Cannon/Licensed Victualler, Widow/52/Bethnal Green, Middlesex/Census
1851/Edward Cannon/Son, Auctioneer/20/Blackfriars Christchurch, Surrey/Census
1851/James Cannon/Son, Cork Cutter/18/Blackfriars Christchurch, Surrey/Census
1851/Charles Cannon/Son/16/Old Kent Road/Census
1851/Charles Cannon jun/../9/Clerkenwell, Middlesex/Census
1851/Annetta Cannon/Daughter/11/Stepney, Middlesex/Census
1851/Hannah Crispin/Visitor/78/Spitalfields, Middlesex/Census
* Provided By Ewan