Bradford - Motorbuses
Bradford - Trolleybuses
County Motors, Lepton
Doncaster C.T. Motorbuses
Doncaster C.T. - Trolleybuses
East Yorkshire M.S.
Halifax Corp/J.C.
Hebble M.S.
Huddersfield Corp/J.O.C
Huddersfield C.T. Trolleybuses
Kingston-Upon Hull Motor Buses
Kingston-Upon Hull Trolleybuses
Leeds C.T
Mexborough and Swinton
Rotherham C.T - Motorbuses
Rotherham C.T. - Trolleybuses
Sheffield Corp/J.O.C
South Yorkshire P.T.E.
Todmorden J.O.C
West Riding Auto Co. LTD
West Yorkshire P.T.E.
West Yorkshire Road Car
Yorkshire Traction
Yorkshire Woollen District
Samuel Ledgard
South Yorkshire Transport, Pontefract
Felix, Hatfield
Pennine, Gargrave
York Pullman