Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
Westminster St James index
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1881/Richard Milliar/Licensed Victualler/27/London, Middlesex/Census
1881/Elizabeth Milliar/Wife, Licensed Victualler/26/Landport, Hampshire/Census