Yes - I know that the CAA says that. However, PRMK is one of the few cities in the UK with very large open spaces spread around its central area. Hence it would possibly be safe (but quite illegal) to fly at 501 ft over the area as a safe forced landing would probably result in the event of engine failure. I am most definitely NOT advocating such low flying - it's just that the unusually large areas of open space in PRMK might give others the idea that the 500 ft rule alone was sufficient.
The activity which has been described sounds suspiciously like being the behaviour of one of those wretched people who drones around taking unwanted photos of houses much to the annoyance of the occupants.....and you're right - it is stupid behaviour and will give light aviation a bad name.
[This message has been edited by BEagle (edited 31 May 2001).]