The Hastings crews at Lindholme were cheesed off about smoking.
It was permitted on Transport Command aircraft and forbidden on Bomber Command aircraft.
Like FED, a coffee cup with a little water as an ash tray but no DV Panel evacuation. The Very pistol was unshipped and the cup offered up to the hole.
I think, in time, the nicotine stains down the fuselage gave the game away
PS, that also remins me of the document shredder on the Varsitys. Vast quantities of airways clearance chits and other miscellaneous bits we passed from the slaves in the back to the driver up front. Towards the end of the trip the Captain would crack the side window and feed each slip out in to the slip stream, obviously so names as the means of shredding the slips.