Westjet, and AC would have ETOPS for their 737's and MAX's across the pond
LEAP engines have 180 mins out of the box
No UK airline has any ETOPS routes on any 737's or MAX
DY/D8 a/c are EI or Nordic reg'd
Back in the day -
Gatwick to Deer Lake Newfoundland was operated on a 737-700 w/ 120 mins ETOPS. APU on whole flight. Flight time scheduled at 5h:30m
Astraeus 737 Deer Lake IT charters