ITV 3 are broadcasting (again) the 1966 film "The great St Trinian's train robbery". I know a lot of the railway scenes were filmed on the Longmoor Military Railway, but were the locos MoD ones repainted, or BR lo0cos hired for the film? During te chase sequence, the thieves are on a J50 68950 and the school girls on a J94 68011. Both locos are black and have the BR emblem on as well as their BR number. I know the MoD had J94s at Longmoor, but J50s? Intriguingly, the shed plate on 68011 is AD2 which presumably denoted Army Depot 2. I was not aware of any J50s making it that far South from their usual haunts though.