I had assumed the 77Ws would be the first to be done, to match the new-builds coming with CS next year, but the Gatwick 777 wiki has been updated, suggesting the G-YMMx are the next batch of 777s for densification. These are the 777 used on BKK - so if the LHR 777s get Club Suite at the same time as they are densified, BKK would be an early route.

I’ve got skin in this game - planning on BKK next April. I’ve had an equipment change from the A380 to one of these - while the entertainment is ancient, the seat itself is fine.