BossEyed - wrong address, from 4/1/2005 the address is:
Wider Markets Support
Building 1406
Room 3
RAF Daws Hill
High Wyecombe
Bucks
HP11 1SH
Civil use is now the responsibility of HQSTC Wider Markets Team.
Most RAF sations will charge you the supplement even if you have Crown indeminity insurance.
The Crown indemnity waiver certificate enables use of MOD bases without paying the supplement. In order to get the certificate you need Crown indemnity insurance cover and undergo a security clearance check.