I am wondering is G-STBL the last BA 77W to be ordered? I've seen no mention or further orders/options for this type. That aircraft has turned the LHR-SIN-SYD around from being a non-profit route to quite an asset to the airline.
I've flown on it to/from New York and it's an amazing product.
I suspect the A350/787-9*1000 is where BA's money is on for replacing 747's/772s.