I don't think the "Right to Roam" in England and Wales is quite as extensive as it is here in Scotland - basically we have the right to walk and camp pretty much anywhere as long as you are sensible - don't damage crops and avoid the immediate vicinity of houses.
I'd really miss living somewhere where you can't pretty much wander about anywhere you want.
Edit: To add another cool aspect about the wilder parts of Scotland, there is a network of free accommodation as well:
"To maintain simple shelters in remote country for the use & benefit of all who love wild & lonely places."