Ah, the old Hastings DEMU's! I'm afraid I have a big soft spot for those things; mainly because I spent so much of my childhood visiting, and later, briefly living with relatives in Wadhurst!
My favourite Auntie, Joyce Sharp, took this transparency for me in 1962:
I'm sorry it is only a low-res scan, (the best I could manage) and it barely shows that the leading (Down, through) unit is sans those b****y awful, farty, two tone "trumpets"
on the roof - and still retains it's perky little whistle! The vague, horizontal line above the motorman's windscreen wiper just about reveals!
Those trains did tend to get a bit "lively" at some locations, but with the distinctly narrow, 2+2 seats and passages in standard class, all but the skinniest grownups could find themselves fairly firmly wedged in! The performance, and being delightfully deafened in the tunnels at Sevenoaks and Tunbridge Wells was all part of the fun for an impressionable youngster!
Pete.
Edit: I forgot to mention that the image also shows part of Aunties own little NSU "Quickly", parked at the right, and just outside the porter's room! As yet, still a young woman, she used to whizz around the lanes, with one of those cream coloured, "pudding basin" bone domes on her head, and wearing a pair of absolutely massive, brown leather gauntlets... but with no other type of protective gear, apart from a heavily woven, and fairly tight fitting skirt that is!!