The houses in the background of the OP don't look very British.
Are they acetylene? Looks like conduit going to the lamps rather gas pipes.actylene lamps. Ironic on an electric loco.........
actylene lamps. Ironic on an electric loco
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just a thought......were any of the WWI trench railways electrified? That design has all the hallmarks of a cheap military austerity lash-up and would be eminently suitable for working over rough narrow gauge track. My guess its an ex-military locomotive pressed into post-war commercial service on narrow gauge during rebuilding. It would explain the tram-like features and also the Crown Copyright label.
I agree. I'm thinking the same about the other features and structures.The houses in the background of the OP don't look very British.
I thought first of Belgium too. Or perhaps Alsace Lorraine?. . . it could be Belgian or that part of northern France near the Belgium border.
Hellingly Hospital Railway in Sussex was my first thought, but loco body is a bit different.
https://en.wikipedia.org/wiki/File:Hellingly_Railway_1906.jpg