I was on one LHR-EWR in June. If you get one of these, seat 5F in FIRST is to avoid at all cost. It is right next to a large cupboard (where 5K would be if there had been 18 seats) and besides a coat closet being integrated in it, it also had several storage places and there was what seemed at times constant crew traffic to it (blankets, duty-free, Survey forms, etc....). IFE screen was the size of a match box. Although I guess I should not complain too much as my original boarding pass was for 14J I believe

-jani