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
An address in the 1911 census summary is at 268, 269 & 272 High Holborn
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
1869/John Rossall/Manager/../../Post Office Directory
1873/John William Morse/../../../Holborn Petty Sessions
1874/John Russell/../../../Holborn Petty Sessions
1875/John Russell/../../../Holborn Petty Sessions
1876/John Russell/../../../Holborn Petty Sessions
1877/Maria Gosden & Thomas Scott/../../../Holborn Petty Sessions
1878/Walter Gosden/../../../Holborn Petty Sessions
1879/Walter Gosden/../../../Holborn Petty Sessions
1880/Walter Gosden/../../../Holborn Petty Sessions
1881/Walter Gosden/../../../Holborn Petty Sessions
1882/Walter Gosden/../../../Holborn Petty Sessions