It's a WD brake van from 1917 These were transfered over to the LNWR, LSWR, GER, and lots of others after the great war.
This is a gauge one model from The Waggon and Carriage Works.
Still a bit more to do yet though. I have discovered that the W irons supplied are not going to work! the instructions say to "thin" them out a bit but I will have to Thin them to nothing to get them in the frame! Maybe I'll try some different Irons?
It don't look too pretty at the moment but it needs a good scrub and scotchbrite to remove the flux and solder residue.