mdavenport
The RAF's No 1 AIDU publishes an extensive selection of publications, see here:
https://www.gov.uk/government/upload...15_16_Full.pdf
Probably the best one for you is the 'En-Route Supplement British Isles and North Atlantic (BINA)' which costs £19.68 plus P&P. It contains a comprehensive listing of UK airfields both RAF and civilian and includes both VHF and UHF frequencies. It can be purchased by civilians.