Railway companies were quick into running bus services to connect their stations to outlying prosperous villages & towns not on the railway network.
The grouped companies post 1923 became part owners of most major bus companies, partially perhaps to control competition.
So in modelling railways we must cover buses.
We have “set up” our own local bus company, a fictional one, Liphook & District Traction Co, but perhaps a holding company for “services” on the various layouts- Chesilford, Kensington SR operating under other names and on Cartersland Camp under its own name and of course a Google+ page of its own.
See links on “about” page.