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
At 27 Parker Street in 1880
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
1841/Mrs M Waters, Kings Arms, 43 Parker street, Drury lane/../../Post Office Directory
1842/M Walters/../../../Robsons Directory
February 1848/Margaret Waters/Outgoing Licensee/../../Era
February 1848/William Dawson/Incoming Licensee/../../Era
1851/Mary Dawson/Publicans Widow/50/West Cholderton, Wiltshire/Census
1851/Harriet M Dawson/Daughter/18/Marylebone, Middlesex/Census
1851/Mary Ann Dawson/Daughter/13/St Georges Westminster, Middlesex/Census
1851/Harriet Harnett/Servant/40/St Anns Westminster, Middlesex/Census
April 1853/Mary Dawson/Outgoing Licensee/../../Era
April 1853/Charles Beard/Incoming Licensee/../../Era
1856/Charles Beard/../../../Post Office Directory
1861/Charles Beard/Licensed Victualler/55/Whitechapel, Middlesex/Census
1861/Susan Beard/Wife/54/Shoreditch, Middlesex/Census
1861/Alfred Beard/Son/20/Bethnal Green, Middlesex/Census
1861/Susan Beard/Daughter/32/City, Middlesex/Census
September 1861/Charles Beard, deceased/Outgoing Licensee/../../Morning Post
September 1861/Susan Beard, widow of Charles Beard/Incoming
Licensee/../../Morning Post
October 1865/Susan Beard/Outgoing Licensee/../../Era Newspaper
October 1865/Alfred James Beard, sole executor of Susan Beard, late
occupier/Incoming Licensee/../../Era Newspaper
1869/Alfred James Beard/../../../Post Office Directory
1871/Alfred Beard/Licensed Victualler/30/London/Census
1871/Susan Beard/Sister, Assistant/42/London/Census
1871/Alice Beard/Sister, Assistant/27 ?/London/Census
1871/Matthew J Byford ?/Potman/23/Ireland/Census
1873/Alfred James Beard/../../../Holborn Petty Sessions
1874/Alfred James Beard/../../../Holborn Petty Sessions
1875/Susan Beard/../../../Holborn Petty Sessions
1876/Susan Beard/../../../Holborn Petty Sessions
1877/Susan Beard/../../../Holborn Petty Sessions
1878/Susan Beard/../../../Holborn Petty Sessions
1879/Susan Beard/../../../Holborn Petty Sessions
1880/Susan Beard/../../../Holborn Petty Sessions
1881/Susan Beard/../../../Holborn Petty Sessions
1882/Susan Beard/../../../Holborn Petty Sessions
1884/Susan Beard/../../../Holborn Petty Sessions