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.
Harrow pub history index
A listing of historical public houses, Taverns, Inns, Beer Houses and Hotels in Middlesex.
Residents at this address
1874/Henry Wild/../../../Post Office Directory
1878/Henry Haynes/../../../Post Office Directory
1890/Henry Haynes/../../../Post Office Directory
1891/Henry Haynes/Builder, Contractoe & Hotel Keeper/59/Alperton,
Middlesex/Census
1891/Harriet Haynes/Wife, Assistant/54/Middlesex/Census
1891/Florence F Haynes/Daughter/27/Alperton, Middlesex/Census
1891/Isabel Haynes/Daughter, Teacher in Board School/18/Alperton,
Middlesex/Census
1894/Henry Haynes/../../../Post Office Directory
1896/Henry Haynes/../../../Post Office Directory
Hendon & Finchley Times 05 March 1897 - Licensing :
Alperton Park Hotel, from William Gallard to George Artkins
1899/Mrs Alice Sarah Bulling/../../../Post Office Directory
1901/Alice S Bulling/Licensed Victualler, Widow/43/Hoxton/Census
1901/Annie S Russell/Companion/22/Bury St Edmunds/Census
1901/Robert A B Sharpes/Visitor, Photographer/35/Eccles/Census
1901/Richard A Holmes/Visitor, Architect/34/Windermere/Census
1901/Arthur C Deverson/Barman/27/Bermondsey, London/Census