Geographia primary route map [of Great Britain] ...
London, 
[1970-1971]
1. 100 Miles Ground London [Publ. 1971]
2. South West England and South Wales [Publ. 1971]
3. Wales and Midlands [Publ. 1970] & [1971]
4. North England [Publ. 1971]
The scale is given on the cover as 1:300,000.
Wanting sheets 5 & 6.