Chopper
Most UK mil bases are from the pre-WWII 'expansion era' when airfields, and the stations that supported, them were built to a standard design. Hence when you go into
most RAF stations, you will find the guardroom of a standard pattern, with SHQ (to a standard pattern) in front of you. Barrack blocks and messes (to a standard pattern will be nearby) with hangars (to a standard pattern) fronting on to the airfield.
Towers (to a standard pattern)
did not need to be that tall as they were positioned at a suitable location to monitor flying patterns and taxiing areas. Remember that most airfields started as grass, with runways usually no longer than 6000ft. Only with the advent of the heavy bombers did airfields get concrete runways and extensions to the primary runway. With the advent of the V-bombers some runways were extended to 9000-ish feet, but the airfield could still be monitored from the standard pattern tower. The late 60s saw the addition of glazed VCRs and in the late 70s these were made bigger covering the whole of the tower footprint. In the 80s we started commisioning bespoke designs ie the "pizza hut" at Leeming or the more modern tower at Waddington.
If you want more info see if you can find any of the books in the "Action Stations" series (other historical airfield reference books are available) one of which details the expansion era building programme and the reasons for many of the designs.