class 150
Is that located roughly under the driving cab on a 143 railbus?
I think this is from a locomotive but I don't know what, it could be from a 57?
I'll have to go for a 150 considering your geographic location.
That a GWR 150? (To be honest I thought it was a road at first, took me a while to recognise where the train was!)
Given the lack of a bin behind that last seat, Class 350/4 with Transpennine Express.