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
This Adam & Eve is probably (actually) in St Pancras. All of the records from the newspaper license transfers refer to the Adam and Eve, Adam and Eve terrace, and in St Giles. But at the same time there are directory entries for an Adam & Eve, Eve place, Pancras road with very similar licensee (actually the same). I will therefore transfer / copy all of this detail to the correct Adam & Eve, Old St Pancras road.
An additional reference worth noting is the 1842 directory (for example) of Pancras road, Gloucester road. This lists several public houses which are all in St Pancras, and also St Giles cemetery.
A listing of historical public houses, Taverns, Inns, Beer Houses and Hotels in St Giles in Fields, London.
Residents at this address
August 1850/Ann Leggett/Outgoing Licensee/../../Era
August 1850/Sophia Williams/Incoming Licensee/../../Era Newspaper
July 1854/John Millett/Outgoing Licensee/../../Era
July 1854/Thomas Lee/Incoming Licensee/../../Era
September 1855/Thomas Lee/ Outgoing Licensee /../../The Era
September 1855/Henry Schnabel/ Incoming Licensee /../../The Era
1857/Emily Schnabel is born on the 18th March 1857 to Henry and Mary Schnabel. He is a licensed victualler at Adam & Eve terrace. By 1861 they are at the Gloucester Arms, 61 Leighton Road, Kentish Town NW5
September 1861/William Francis/Outgoing Licensee/../../Morning Post
September 1861/Benjamin Strutton/Incoming Licensee/../../Morning Post
October 1861/Benjamin Strutton/Outgoing Licensee/../../Morning Post
October 1861/Robert Rosco/Incoming Licensee/../../Morning Post
July 1869/George Henny/ Outgoing Licensee /../../The Era
July 1869/William Young/ Incoming Licensee /../../The Era
1873/Frederick Green/../../../Holborn Petty Sessions
1874/Henry Woodeson/../../../Holborn Petty Sessions