I got an opup from WTP to Club on the BA57 on 9th September (the late flight LHR-JNB). The earlier BA55 was delayed until 1000 the next day which I am sure had a lot to do with it, although I am also BAEC Gold.
The service was a bit chaotic TBH e.g. nothing to drink before takeoff, but I expect there was a lot of stress behind the scenes. On approach to JNB neither my seat (21G) nor my neighbour's (21F) would return to the takeoff/landing position, stubbornly remaining flat despite the best efforts of crew. The two of us were placed on the crew jumpseats at the top of the stairs for landing, which was a new experience for me!