Hi,
Another interesting thing is the guards van that worked with the electrics, it was one of four built by the LMS using their components as a prototype for a standard guards van, one of these were allocated to each of the big four company's for trials before the war if I remember correctly so that when the production for the standard van came along it would be accepted. Instead the LNER van was adopted with a few mods, a drawing of it is in the book LMS wagons vol 1.
Models of this van can be made from the LMS guards van in the main scales, the 4mm one that I built started out as a Stanier 20 toner before a razor saw was taken to it, I have also built a van in 7mm scale with the Slaters kit as a starting point I must get around to getting a loco to go with it.
Steve.