Tony, I'd say that the plane of sharpness starts at the leading edge of the barrow crossing, the crossbeam of the buffer stop looks slightly soft too. Apart from that, a terrific shot and I'm thinking that in real life, a shot from that spot, trying to get the loco and train in focus, would result in the foreground being thrown out anyway!
(And apart from the humpty third coach, the degree ot naturalness is amazing. now how about some smoke and steam effects....... )
I swear, I proofread before clicking post, but still... Grrr!!!