This kit is of the Glasgow Type IIB cars. They were 7 window 4 wheel open top double deck cars with garden seats on the top deck.
Similar cars were used in Belfast, Bristol, Cambridge, Derry, Edinburgh, Great Grimsby, Ipswich, Keighley, Liverpool, London, Londonderry, Manchester, Newport, Oxford, Plymouth, Portsmouth, South Shields and Stockport.
These cars look like the KW 109 Liverpool cars, but with 7 windows.
Horses are not included.
For transfers see KW 0109c tr