Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
Bishopsgate pub history index
Existed from at least 1805. Half Moon Alley seems to join Bishopsgate at, or near, the Sir Paul Pindar; and pictures on this page show the name of Half Moon street.
Half Moon Tavern, Bishopsgate street
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1805/Thomas Ockford, Half Moon, Half Moon street, Bishopsgate street without/../../Holdens Directory
1819/Mr Hellyer, Half Moon, Half Moon alley, Bishopsgate/../../Licensed Victuallers Association
1829/J Hellyer/../../../Robsons Directory
1832/John Hellyer, Half Moon, 9 Half Moon street/../../Robsons Directory
1833-34/John Hellyer/../../../Pigots Directory
1838/John Hellyer, 9 Half Moon street/../../Electoral Register
1839/John Hellyer/../../../Pigots Directory
1841/Eliza Woodhead/Female Servant/30/../Census
1841/Charles Read/Male Servant/30/../Census
1842/John Hellyer/../../../Robsons Directory
1843/John Hellyer/../../../Post Office Directory
1848/John Hellyer/../../../Post Office Directory
1851/John Hellyer/Licensed Victualler, Widow/68/Fareham, Hampshire/Census
1851/Annie Barton/Servant/29/Waltham Abbey, Essex/Census