I’ve flown on BA, BB, BD, BE, BF and BP this summer, all of which had mild cabin refurbs ahead of Summer 2019 with new leather seat covers. Surely TUI would not go to the expense if these aircraft were only to be around for a year?
BN and BG still with unrefurbished seats (although the latter should not have been around Summer 2020 anyway). Have not flown on AW, AY or BC this Summer (yet! Maybe this weekend!).