Online train ticket booking

http://www.nationalexpresseastcoast.com/

This site was tipped by A to B magazine in its May 08 issue (no 65). They say "it accepts cycle as well as seat reservations. No word yet on whether this actually works". There's apparently no booking fee and there's Fastticket support. The interface is very impressive. I like the way you can click on a train by time and the screen updates to show you the fare you would pay.