RoyBremner

I see what you mean, Chris: it's hard to tell. But I think you'd be able to see more of the truss if it was a Hawksworth. There are other photos that show the Thompson + Mk1 combination (e.g. photo 229 in the third of Ivo Peters' Somerset and Dorset in the Fifties/Sixties books). There's also "A Branch Line Railway" where John Betjeman travelled from Evercreech Jn to Highbridge in 1963 (available on iPlayer: https://www.bbc.co.uk/iplayer/episode/b03495yn/lets-imagine-a-branch-line-railway-with-john-betjeman). Betjeman starts out in a B-set ("1st class because I'm on expenses") but about 8.5 minutes in the train changes to a Thompson Brake 3rd and a Mk1 composite (W41047). Roy

There's a colour photo of a Thompson 5 compartment BT in Welch's Somerset & Dorset Sunset (p79). Unfortunately the brake portion is obscured by the shadow of Rock Cutting Bridge. The BT has what I think is a 64' Mk1 non-corridor composite for company: the difference in length must have made them appear rather an odd couple.