Originally Posted by
SunLover
OP did not mention his origin (only 7 hours of flight time, morning flight, and another flight 12 hours later) but UA is currently operating:
EWR-LHR as 4x 763 and 1x 777
IAD-LHR as 2x 777 and 1x 752
It could have been the morning 752 flight out of IAD, but it feels like it was the morning EWR 763 flight.
SunLover