Since December last year all military RT was harmonised with civilian and is done in accordance with CAP413 - hence the big changes in the last CAP413 amendment and why you now 'touch and go' rather than 'roll' at military airfields now!
Brize VHF freqs are -
LARS - Brize Radar 124.275
APP - Brize Approach 127.250
ZONE - Brize Zone 119.000
RAD - Brize Director - 133.750
SRA - Brize Talkdown 126.500
TWR - Brize Tower - 123.725
GND - Brize Ground - 121.725