Hi, All,   I am attempting to fill in some detail on this excursion.   This is what I know so far.   1. It was formed of a 3-Car Swindon Cross Country unit (later Class 120).   2. A photograph of it passing Midsomer Norton appears in "Somerset & Dorset in the Fifties, Vol. 2" (Ivo Peters).   3. I have seen, but cannot currently find, a published photograph of what appears to be the same train in Lyme Regis.   I would especially like to know:   1. Full route (ideally) but at lea