In a previous role as chief pilot I had a letter from the CAA's enforcement department, alleging repeated infringements of the 500 ft rule by our unit aircraft.
Why they sent it I never did find out because
a) the allgations revolved around us taking off and landing at our CAA cleared base helipad and
b) we were flying under a Police AOC, which exempted us from Rule 5, in any case.
I suggested to the UEO that the Chief Constable might like to reply to them about wasting police time but he declined to do so.