London Westminster & Middlesex Family History Society

Ancestry have released new data covering the London Electoral Rolls 1835-1965. See

 

http://search.ancestry.co.uk/search/db.aspx?dbid=1795

 

They are name indexed, though like so many scanned documents, the quality of the OCR is bound to vary. I noted that while some Middx records (e.g. for Enfield) are there for the earlier years, they are missing for the more recent period. However, it's a valuable resource allowing you to find addresses in the modern (post censuses) period.