Rad the article now. Seems to be a problem they're cracking down on round Salisbury Plain area. Spoke to my brother-in-law's other brother-in-law (he's a serving officer) and they're having major problems with people ignoring red flags etc. The MOD get more powers to close adjacent land during times of war apparently (we're still technically at war) so this has been a problem too.
Does seem like they're just clamping down on a problem that has become a lot worse since every man and his dog now gets out in the countryside.