We have a very large number of six-inch County Series sheets. Some counties are better represented than others. Most sheets are dated 1900-1940, with examples either side of these dates. We have not listed our holdings but can respond to requests for specific sheets or specific areas and places.
For anyone using large scale maps, we have republished the Ordnance Survey indexes to the sheet lines in Indexes to the 1/2500 and 6-inch scale maps : England and Wales, and Indexes to the 1/2500 and 6-inch scale maps : Scotland.
Please contact us with your requirements.