As vectis mentioned, the Old Country Train was writtenn from the reminiscences of two railwaymen, Mick Wright and Brian Jeffery from Tonbridge shed... you can find it with music as a PDF on the Sing London site- look for Singing Histories: Kent and it's among the 12 there. It is on a CD, Man Of Kent, and I have a few left- please PM me if you're interested
Bob