My husband and I are going to be in London for 2 weeks, and we originally planned to rent a car for our second week there so that we can go explore places like Cambridge, Bath, and Oxford. (We have a Travel Card for the first 7 days for Zones 1-6 in London). My question is, if we were to buy a rail pass or purchase individual train tickets, what do we do once we get there? Call a taxi? Are there shuttles/buses ready to carry people away from the train stations? Thanks in advance!