I've just looked it up, and I know Wikipedia is by no means always correct, but this is what it says. 'The Up train had a departure from Manchester London Road at initially 5.40pm, but later 5.45pm with only one stop at Stafford, arrived in London Euston at 9.p.m, comprising eleven carriages' I know it was the only train which had a green light when going over the viaduct.