Driving wheels 4 ft. 6 inches.
It was not unknown for the LNWR 0-8-0s to work similar trains, and they had 4ft. 5.5 inch driving wheels.
The first vehicle may be some kind of horse box, with separate compartments for horse & groom.
Many of the other vans carried anything unsuitable for open wagons, so could be fruit/veg., parcels, etc., etc.
LNWR & LYR merged in 1922, then becoming part of LMSR in 1923, but not all locos got to be renumbered before withdrawal.
And, when considering locations, remember that both LNWR & LYR had running powers over some lines belonging to other companies.