Always known as 'wild camping" as far as I know. Been doing it since the 90"s . Started by going to Anglesey and riding our motorcycles onto ligwy beach and having a fire and sleeping on the sand then off to Bagnol campsite to use their showers haha Now whenever we go long haul exploring 90% of time we sleep in tents . Wherever we can find islolation for beers n and a camp fire . Best yet Is marooning ourselves on an island in an esturary then when tide comes in we have an island to ourselves roll on spring for that one again *