It's hauling a Ratio 4 wheeled ex-GWR passenger carriage. A few of these lasted into the early 1950's, so it's quite possible that the BR carmine is accurate. Given that the kit is 30 plus years old it still makes into a nice model.
The lorry to the right is a EM76503 Pocketbond "Classix" Jen-Tug artic & flatbed trailer GG2301 in "British Railways" livery. I have de-railwayised it be removing the railway markings, finished it with a puff of matt varnish and added a load of bags - the load can be whatever you fancy!