Probably ought to start (yet another) separate thread now to go on and on and on about access, but whatever.
I've just read this: "It is expressly forbidden to camp on Access Land subject to CROW 2000. One or more national parks have given permission to wild camp. But much of the park(s) is Access Land, so one is forbidden from camping there". Bit of a Catch 22

.
Another curious one for a Friday: "Landowners may give permission to a wildcamper. The tragic problem is that they probably shouldn't. By giving that permission, they are also accepting a 'duty of care' over you, and therefore a degree of responsibility should anything go wrong". I wonder how true that is?
Section 4 of the Vagrancy Act 1824, as we all presumably know and love: "Every person wandering abroad and lodging in any barn or outhouse, or in any deserted or unoccupied building, or in the open air, or under a tent, or in any cart or wagon and not having any visible means of subsistence and not giving a good account of himself or herself". What exactly is a "means of subsistence"? Possessing money, a stove, a toothbrush shows means. What exactly is "giving a good account of oneself"? I'm a fine upstanding citizen caught out in the rain and needing to rest until it's safe to continue? The punctuation is dubious in the definition though, if one carefully notes the position of commas, "and"s and "or"s. For example it's quite a different definition if a semicolon is placed after "wagon", which I imagine was the intention.
And we also have this of course: "By the amendments incorporated in the Vagrancy Act 1935, Section 1(4), the reference in the 1824 Act to a person lodging under a tent or in a cart or wagon shall not be deemed to include a person lodging under a tent or in a cart or wagon with or in which he travels"."
So the Vagrancy Act doesn't apply to wild camping and we're back to civil trespass (because we're not intending to reside and we'll leave if asked and not damage anything and not take anything away).