As a matter of interest to all. Radio controlled model aircraft are also covered by the same code. After much lobbying of mp's and the CAA we got some exemptions as members of the bmfa. It's almost impossible to observe the 50m rule at most slope soaring sites. As is the 400ft rule, you break that within 10 seconds of launching off most hills. So we are trusted to fly above 400ft and to assess the risk when flying near people for ourselves. This has worked well. This doesn't apply to multirotors though. I'm baffled. My 6kg Carbon/Kevlar composite glider capable of speeds of 250mph+ is going to do far more damage.