
I think that's a mk3 loco hauled coach rather than a HST trailer, the giveaway is the wood effect table top, so I'm guessing you were onboard that summer Saturday GWR Par-Exeter-Par service, and the view seems very much like that looking from the GWR mainline over the Exe estuary towards Topsham, Exmouth etc.?
390? At first glance it looked like the front end of an IEP![]()
Class 450?
The other one I was going to guess - Class 444?