Hertford North
As an interesting aside from this game, I wonder how many consecutive stations on various routes are named in alphabetical order? The longest run I have found so far is four: Albany Park, Bexley, Crayford & Dartford, while on the same route there is a run of three, namely Lee, Mottingham & New Eltham.
Down in deepest Cornwall, on the Newquay branch, we have Roche, St Columb Road & Quintrell Downs....although they are not geographically in consecutive order. Can anyone find more than four in a row?