(23 Jun 2026, 8:55 am)Nerd4321 wrote Idk if this would count but it didn't pass through the North East but the longest one in the UK was no doubt the Megabus M84 from Glasgow to Portsmouth. Someone said the full route was 14/half hours

Going down that route, Aberdeen to London with Flixbus has be longer surely or very close at least, stops at Newcastle aswell that.