About an hour in, they are travelling to Weymouth on what is supposed to be a British Railways (BR) express passenger train wrongly headed by a WD (War Department) class locomotive, which belonged to, and ran on, the Longmoor Military Railway (LMR) . On arrival at Weymouth a few minutes later, a different engine is hauling the train.
About an hour in, they are travelling to Weymouth on what is supposed to be a British Railways (BR) express passenger train. The exterior shot, however, shows a green WD (War Department) class locomotive, which belonged to, and ran on, the Longmoor Military Railway (LMR). This engine would never have been used on a BR train.