Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
Manchester pub history index
Directory of Pubs in the UK, historical public houses, Taverns, Inns, Beer Houses and Hotels in Manchester, Lancashire.
The following entries are in this format:
Residents at this address
1911/William Simpson/../../Kellys Directory
1929/William Lyth/../../Kellys Directory