This flight was rebooked from a missed connection three days before because of connecting flight cancelation. We had upgraded on our unique flight but had been assigned mentor seats on this flight. Examining in was uncomplicated and easy, crew was awesome and economical, but I might increase seat assignment randomness https://whitemagictravels.co.uk/blog/how-to-enjoy-your-next-trip-in-london-without-failing-to-pre-booking-flight-tickets/