This kit is of the Liverpool class E horse cars. They were 6 curved top window 4 wheel open top double deck cars with knifeboard seats on the top deck.
Similar cars were used in Bristol, Huddersfield, London, Manchester, Newcastle, Preston and St Helens.
These cars look similar to the KW 109a Glasgow cars, but with side windows with curved tops and no toplights.
Horses are not included.
For transfers see KW 0109 tr