Wow brings back some memories this question
BEA Childrens Xmas parties at the old Runway canteen , Santa disembarking from a parked Viscount. Also father in laws retirement party in same location.
Wife workd in the BEA multi story office block-top floor on the 28R (as it was ) threshold corner-fantastic views. Then she moved over to 'the enemy' BOAC , although it was all BA by then the rivalry was still entrenched and worked as one of the Speedbird London HF/SSB operators in their tiny location at the top of TBA -better known as the Kremlin- if my memory is correct. With all the outsourcing of work down to Cardiff and other progress that part of the airport has changed a lot but some of the old hangars from BOAC days will have seen everything from Britannia's and 7Cs to Concorde and Triple 7s and no doubt 78s too by now.