Get UK Law Questions Answered by Verified Experts
Thanks for your question.
You should check with your local planning authority discreetly to make sure, but it's difficult to envisage a situation in which they would call that a breach of their planning policy.
If your next door neighbour had a right to uninterrupted light exercisable over your property then they could restrict high walls.fencing but, again, it's very difficult to see how they could enforce that right against a 5 ft high fence.
You are, in all probability, absolutely fine.
If this is useful please kindly click accept so that I may be rewarded for my time. It will be gratefully received and you will be free to ask follow up questions.