In 1977 I flew JNB-LHR on British Airways to attend my grandfather's funeral. The aircraft we flew on was a 747, the first one with RR RB211 engines. There was also a little plaque on the bulkhead commemorating the fact that this aircraft held the record for the highest weight takeoff of a commercial airliner at the time.
I know we have some history buffs on here so here are the questions:
What was the registration?
What happened to the aircraft after British Airways?