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.
1836/William Rose, Cavendish Hotel, 81 Jermyn street/../../Pigots Directory
1842/T Hunter, Cavendish Hotel, 81 Jermyn street/../../Robsons Directory
1843/Thomas Hunter, Cavendish Hotel, 81 Jermyn street, St. James's/../../Kellys Directory
1843/Mrs Redington, Cavendish Hotel, 81 Jermyn street/../../Kellys Directory
1848/Mrs Amelia Rose, Cavendish Hotel, 81 Jermyn Street, St James's/../../Post Office Directory
Morning Advertiser 26 January 1860 - Transfer of Licenses
Cavendish Hotel, Jermyn street, John Gibbs to Reginald Francis Ghewy
1899/Felipe S. Franco, Cavendish hotel, 81 Jermyn street SW/../../Post Office Directory
In 1921 census at Cavendish Hotel are
Wilfred Drew, Hotel Manager, Rosa Lewis Hotel Proprietor, 81 Jermyn street, aged 36 years 1 month, and born in Walworth, London
Emily Mathilda Drew, Wife, aged 41 years 10 months, and born in St Johns Wood , London
Alfred Drew, Son, aged 7 years 2 months, and born in St Pancras, London
Muriel Drew, Adopted, aged 5 years 9 months, and born in Ealing, London
Albert Apthope Drew, Son, aged 1 year 4 months, and born in St Pancras, London
1922/Mrs Rosa Lewis, Cavendish hotel, 81 to 83 Jermyn street SW1/../../Post Office Directory