The U.K. does not have a right to roam. It's a sore point for ramblers et al.. The legal situation differs between England and Wales, and Scotland; and campaigners would like the Scottish right to be also available in England and Wales, which largely only has what is tantamount to a codification of what the common law situation used to be back in the 20th century.

And indeed in Northern Ireland, which has the most restrictive laws in the U.K. in this respect, even more restrictive than the current situation in England and Wales.