Tezzer, were you one of the detachment that had to be pulled out of Valletta one night because there was a bit of an anti-Brit nause going, shots fired etc?
You are right, air cadet camps were based at Hal Far -
afaik the last time the old Officers' Mess there was used by British forces. I was based there for the whole summer of 1976 as Adj Air Cadet camps.