292/293 currently seems to fly with a mix of the GE engined 777s with 14 F seats, which have had the new WTP cabin, and the RR engined 12 F 777s which have not had the new cabin. There may also be occasional appearances by one of the three non-ER 777s (G-ZZZ*) which also have the new WTP cabin.

The internal BA codes you're in theory hoping for in the aircraft type on the seatmap are 77C, 77D, and 77X - these are all GE-engined with the newer IFE and WTP seat.

That said, last time I had a flight showing 77E in the seatmap, which should have had the older IFE and older seats, the actual aircraft was from the 77C block.

What you don't want is 77F, as this is an RR-engined plane, with the older WTP seats.