At the time of retirement (I last flew on one in early 2001), the 747 Classic fleet at BA
had the new "pod" First Class seats and the Club World Cradle seats, the class on which I flew. We had rather small PTV screens at each seat, with a somewhat limited selection of programming, but I remember the seat to be fairly comfortable, with very good service. In early 2002 I was comped to First Class on an LHR
on a 747-400, and was blown away by the service. There were 5 of us in the front cabin (I was in 2A IIRC, looking forward), and we received tremendous food, service, entertainment, and a great 3 hour nap in between the meal services (which were served at our time preference). Unfortunately I missed out on First on the Classic, but I can imagine it was a similarly excellent experience.