Rob,
I was in the BSAC dive club on board, but did not join until July 1976. More specifics about the club, we were No. 376 (QE2 Special) Branch of the BSAC, I was member 66618. Names that come to mind are Hal Crook, Paul Tsiamas, Norman Bradley (he later went onto the Cunard Princess or Countess) and Stan Childs. Learnt so much from these people and and I completed 37 dives.