I was determined never to start one of these threads, having seen the dogfights that ensue normally when these threads start!
This 737 was flying northwest-bound heading 330 overhead north-Nottinghamshire, UK, towards the TNT (Trent) VOR, last Sunday (1 April), at 18:08 local time (BST).
It appeared to be at cruise altitude and not descending into MAN. We get a lot of DUB aircraft overhead here, as well as a lot to the Scottish airports. This aircraft however was headed for TNT so was either for DUB, BFS, MAN, LPL or a trans-atlantic flight.
It has me utterly perplexed - I can't find anything even vaguely matching this colour scheme so I am wondering if it is something in a special colourscheme?