I think you may be mistaken about the aircraft ID.
Hampden P4405 (not P4409) crashed at Oulton (a couple of miles from Cawston) on 10th February 1941, with the loss of the following crew:
Sgt John Edward Hill
Sgt Robert Arthur Chanin
Flt Sgt Robert Alfred Gapp
Flt Lt Walter Eric Frutiger
Do any of those names ring a bell ?
Can't help with the markings, I'm afraid.
Last edited by DaveReidUK; 30th Oct 2018 at 16:52.
Reason: typo