Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
Westminster St James index
The Anglesea exists until at least 1869, but gone by 1882; the early name is the Cock until at least 1829
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1805/William Gardener, Cock Inn, 63 Haymarket/../../Holdens Directory
John Lockie, a descriptive London Street Directory in 1810 describes as "Cock Inn, Haymarket, at 63, about the middle of the West side, opposite James Street"
1811/William Murray, Cock Inn, 64 Haymarket/../../Holdens Directory
1829/Robert Roberts, Cock, 64 Haymarket/../../../Robsons Directory
1831/Robert Roberts, Anglesea Arms, Haymarket, 1 guinea/../../Licensed Victuallers Association
1832/Robert Roberts, Anglesea Tavern & Hotel/../../../Robsons Directory
1833-34/Robert Roberts, Anglesea Tavern/../../Pigots Directory
1836/Robert Roberts, Anglesea Tavern, 64 Haymarket/../../Pigots Directory
1842/E Harvey, Anglesea Tavern & Hotel/../../../Robsons Directory
1848/Edmund Wright/../../../Post Office Directory
1862/Robert Cross/../../../Post Office Directory
1869/William Pooles/../../../Post Office Directory
April 1869/William Pooles/Outgoing Licensee/../../Era
April 1869/Marshall Brumfit/Incoming Licensee/../../Era