Oxford and the area's main towns are convenient by bus from London, as is Windsor (although trains are faster), but St. Albans is best reached by train.
You can travel between the major towns by local bus, but it's complicated and can require changing more than once. For information, contact Traveline. If you want to see more than one town in this area in a day, it's best to rent a car or join a tour.
First. 01224/650100; www.firstgroup.com.
Megabus. 0900/160–0900; www.megabus.co.uk.
Oxford Bus Company. 01865/785400; www.oxfordbus.co.uk.
Reading Buses. 0118/959–4000; www.reading-buses.co.uk.
Stagecoach Oxford Tube. 01865/772250; www.oxfordtube.com.
Traveline. 0871/200–2233; www.traveline.info.