I am trying to find out the name of a piece of music that is often associated with railways/ train journeys etc. I would guess that it was written in the 1950's or earlier.
Do a wikipedia search for CORONATION SCOT, and ignore the bit about the Engine itself. Composed by Vivian Ellis. If it isn't that one, have a look at thetrack PUFFIN' BILLY.
There's also a piece called "Stockton to Darlington Express", but I can't find any links to it. Also, something called "Fiddle Faddle" by Leroy Anderson, which has a very busy train-y sound to it.