Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
Newington pub history index
Chatham Arms 20 Chatham Road assigned 20 Horsman Street 29 November 1898: **
Residents at this address.
1878/Edward Paine/beer retailer/../../Post Office Directory *
1881/Henry Turrey/Beer Seller/60/Essex/Census
1881/Jane Turrey/Wife/66/Essex/Census
1881/Francis T S Watson/Barman/18/Middlesex/Census
1881/Charlotte J Watson/General Servant/16/Middlesex/Census
1896/Henry Turvey/beer retailer/../../Kelly's Directory *
1905/Mrs S Fuller/Beer Retailer/../../Hughes Directory
1914/George F. Johnson/beer retailer/../../Post Office Directory *
1919/Louis O'Brien/beer retailer/../../Post Office Directory *
1921/Louis O'Brien/Beer Retailer/../../Hughes Directory
1934/Arthur Sidney Reavell/Beer Retailer/../../Hughes Directory
1944/Arthur Sidney Reavell/Beer Retailer/../../Hughes Directory
* Provided By Ewan
** Provided By Bill Rigby