National Rail UK

Barnstaple to Exeter train
WhT a fabulous improvement. Gone are what can only be referred to are the cattle trucks and in their place are lovely modern carriages. The old bone rattling carriages have been replaced with carriages with shock absorbers. There is a spacious toilet cubicle, there is table seating with plugs for chargers. I do believe there was an extra carriage or two. Huge all round improvement

Great site for buying cheap rail tickets. You can plan your journey and get the best route suggested to you.
The site will take you directly to the rail company selling the tickets.
On the downside it can be cheaper splitting up the journey into smaller journeys. Make sure you check out this alternative.
Overall - A very good site.