You’ll find here a number of files which you can download. Any donation towards the costs of providing these downloads would be very welcome.
Be aware that some of the files are quite large!
Old Town plans. These are from John Wood’s atlas of around 1820.
WW2 Military Cassini maps. These were created in 1940, for use in case of invasion. They were based on the existing OS maps, with the Cassini military grid system added.
The following military map is more recent and the grid is the modern OS grid.
Old OS maps. These are copies of 1960s maps which are now out of copyright.