Changing routes on National Rail
In the National Rail system, there may be different reasonable routes between two stations to make a journey. For example, to travel from Bournemouth from Horley (one stop north of Gatwick Airport), I can either first take a South Western Railway service to Southampton Central and change to a Southern service to London Victoria alighting, or take the South Western Railway service all the way to Clapham Junction and change to a Southern service back to Brighton there. Now these…