Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
Holborn index
Earlier address is at 80 Grays Inn Lane in 1856 and earlier; at 166 Grays Inn road by 1869 but appears to disappear about this time.
A listing of historical public houses, Taverns, Inns, Beer Houses and Hotels in Holborn - St Andrew, London.
Residents at this address
1805/William Edwards, Nags Head, Grays inn lane/../../Holdens Directory
1825/Mr
Howse, Nags Head, Grays Inn lane/../../Licensed Victuallers Association
1831/Joseph House, Nags Head, Grays Inn lane, 1 guinea/../../Licensed Victuallers Association
1833/Joseph House/../../../Licensed Victuallers Association
1836/Joseph House/../../../Pigots Directory
1839/Joseph Howse/../../../Pigots Directory
1841/Joseph Howse/../../../Post Office Directory
1848/Mary Howse/../../../Post Office Directory
August 1848/Mary Howse/Outgoing Licensee/../../Era Newspaper
August 1848/John Bates Wells/Incoming Licensee/../../Era Newspaper
June 1849/John Bates Wells/Outgoing Licensee/../../Era
June 1849/Josiah Stretch/Incoming Licensee/../../Era
1851/Josiah Stretch/../../../Kellys Directory
1851/Josiah Stretch/Victualler/45/Bethnal Green, Middlesex/Census
1851/Ann Stretch/Wife/44/Bethnal Green, Middlesex/Census
1851/William Stretch/Son, Tin Plate Worker/17/Bethnal Green,
Middlesex/Census
1851/Walter Stretch/Son/12/Bethnal Green, Middlesex/Census
1851/Henry Stretch/Son/9/Bethnal Green, Middlesex/Census
1851/Robert Stretch/Son/5/Bethnal Green, Middlesex/Census
1851/Edward Stretch/Son/2/Bethnal Green, Middlesex/Census
1851/Joseph Richardson/House Servant/38/Orsett, Essex/Census
1856/Josiah Stretch/../../../Post Office Directory
1861/Josiah Stretch/Victualler/56/Middlesex/Census
1861/Henry Stretch/Son, Assistant/19/St Andrews, Middlesex/Census
1861/Robert Stretch/Son, Assistant/17/St Andrews, Middlesex/Census
1861/Edward Stretch/Son/12/St Andrews, Middlesex/Census
January 1862/Josiah Stretch/Outgoing Licensee/../../Era
January 1862/Samuel James/Incoming Licensee/../../Era
1863/Samuel James, Nags Head, 80 Grays Inn lane/../Post Office Directory
1869/William Pike, Nags Head, 166 Grays Inn road/../../Post Office Directory