I flew in this British Caledonian helicopter between LGW and LHR in January or February 1984. In the chopper with me were Canon and Ball, their wife's and kids.
It was not my first helicopter flight, had flown offshore on chinooks and s61's but that flight to LGW was my first fixed wing flight, and then my next as a young nervous lad was out to the Middle East. Great memories.
Edited to add, I never use BA now to go on holiday to any of the LGW destinations as they just fly to LHR and LCY from ABZ. The journey by road between those 2 airports with your luggage is a nightmare.