old-maps.co.uk provides:

online access to Britain’s most extensive digital historical map archive abso-bleeding-lutely ace! there may be black holes in the coverage (i haven’t fully investigated yet, but i think it may be that you can’t slide from sheet to sheet because of the different ages of the sheets, i think you probably just need to go back to the gazetteer to find the next sheet) but i’ve turned up an 1854 map that i can almost spot my house on.

i’m off to compare this map to the modern day ordnance survey map. since old-maps is jointly owned by the ordnance survey an overlay facility for the modern maps would be a nice extra touch but i’m just happy to have easy access to tons of old maps.

this’ll keep me busy for a while.