Someone smell something?
Get the registration of the a/c next time, go onto G-INFO on the CAA website and see who's and what type it is. Easy! Oh, and then let us know here too. We all enjoy a good laugh.
The pilot wasn't bald was he?
Helicopter wasn't dark in colour was it?
If he is 'busting' the 500' rule he's a d*ck as there really isn't any need to. Maybe he has a legitimate reason?