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.
Cripplegate pub history index
Existed from at least 1805.
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1805/John Colson, the Fountain, Redcross street, Cripplegate/../../Holdens Directory
1833-34/William Hockkins, Fountain, 41 Redcross street, Cripplegate/../../Pigots Directory
1842/J Belton/../../../Robsons Directory
1848/Benjamin Himmins/../../../P.O. Directory
1851/Benjamin Himmins/../../../Kellys Directory
1851/Benjamin Himmins/Victualler/39/Mile End, Middlesex/Census
1851/Sarah Himmins/Wife/40/Sterling, Scotland/Census
1851/Christina Patterson/Niece, Barmaid/19/Sterling, Scotland/Census
1851/George Cary/Visitor, Traveller/35/Shepton Mallett, somerset/Census
1851/John Boone/Visitor, Traveller/27/Manchester/Census
1851/George Entwistle/Porter/22/Kennington, Middlesex/Census
1851/Mary Nash/Cook/45/Plymouth, Devon/Census
1856/George S Carey/../../../Post Office Directory