I don't think we could do any better than the FAA version posted by Nick. It's simple, and covers everything necessary.
Sadly, I can't see the CAA adopting (d). It's far too sensible.
(d) Helicopters. Helicopters may be operated at less than the minimums prescribed in paragraph (b) or (c) of this section if the operation is conducted without hazard to persons or property on the surface.
Enough to give a CAA type a heart attack!
