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.
Hanbury Street, East London.
The Jack the Ripper story is exceedingly well documented by many at casebook.org - what a brilliant site. There are many amateur sleuths, and a whole host of detectives to the highest ranks on this site.
I just like to recreate some facts, in a simple format, e.g. a timeline of Hanbury Street; and its residents, and its Pubs in London.
A good start is to look at the Trade Directories and census available for these years. Starting with 1841, through the 1850's to about 1944 a hundred years later. Referring back to Hanbury Street - see map.
I have current access to Trade Directories of 1882 and later that show Hanbury Street as a rather long road. About 25 years earlier [1856] it is split into four separate sections, and entirely different road names.
These four roads are : -
Browns Lane [2-26 Hanbury Street & 3 - 39 Hanbury Street]
Montague Street (aka New Montague Street)
The historical directory listing will use these as a base.