Chivers Finelines LNER Dia 120 4W Gresley Panelled Full Brake (Pigeon Van).
I like to blast rolling stock with a coat of matt black, especially the underframe area which can be tedious if done by brush, in this case I used an aerosol one from Halfords. These car paints are super tough and make a great base for further painting.
Since taking the photo, a 2nd coat BR Carmine is drying; I was going to use a dead ringer car colour from Halfords (Ford Rosso Red) but have discovered a fresh tin of Railmatch BR Carmine (aka 'Railmatch : 311 : Crimson') in my paint collection which is doing just fine......
Actually as I look at the photo here, I'm very tempted to do another in finished in departmental black livery as part of an engineering train. How accurate this would be I have no idea, but it think it would look the part.