The official report states that the driver said they had pulled off signals to cross to the Down Main, but later changed that. The fireman who would have confirmed this was killed. The signalman stated this was not done, the signals were never pulled off until the train left on the (unusual) Down Relief. The inspector believed the signalman.I agree - but on this occasion there would presumably nothing in the relevant Train registers , (1940's Britain did not have data loggers !) , and the station staff around at that ghastly time of night would have been very few. Regrettably we shall never really know what happened.
Plus of course a disaster to a prime overnight train heading for Plymouth with a high % of military and naval staff was not good news.
Word from the Taunton staff in the 1960s was that indeed the signals had been handled as the driver said. There's a bit of a clue in the report - the train was an hour late but was stuck at Taunton platform for a further 20 minutes. Something had arisen on the platform, the train had been expected to be away well before it did and ahead of the newspaper train. It was only the delay that caused the change of plan. There was some issue why the signalman represented otherwise which became known afterwards. A Taunton railman of the era later wrote a book which also described exactly this. The signals were only pulled off up to the Taunton advanced starter, the ones on the well-known signal gantry west of the station, so had not been offered yet to Taunton West Junction box. There was another train behind on the Down Relief they were keen to get into the platform.
Apart from the rail staff, our family doctor when I was young there had been in position for a long time, and was one of those called out to the accident site in the middle of the night. He had been right up close with the dreadful scenes.