When I lived in England in the early 90s, I would by a train ticket to a destination for the day, and get off at the different towns that the train would stop at in route to my final destination, look around at the town, and then hop back on the train later to my final destination. I dont know if it was exactly legal to do at the time, but no one every bothered me for doing it.
I am returning to England for a holiday this summer and was wondering if I could still tour like this.
Thanks.