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hi jake-the-peg, no, it doesn't really matter what the answer is, it's just that he's a one apparently for his boundaries according to other neighbours, because they've had trouble with him before, and I just wanted to be a bit clued up about it legally in case he started getting a bit shirty about it! So far he's been really friendly with us and I wouldn't cause any ill feeling over a small matter like this! Hopefully we'll put up a (6ft!) fence in the spring. Thanks for your advice everyone!