Category D Airspace
The most common controlled airspace zone that will affect where a pilot is allowed to fly their UAV is category D. If the flight involves this airspace, then the pilot must apply ahead of time for special permissions to fly if their drone is in the 7-20 kg category. If your drone pilot is flying a drone that weighs under 7kg then these permissions aren’t necessary (the rules governing safe flight at all times still apply of course). Your pilot will be able to advise you the crafts they have in their fleet and what they would plan on using.
Quoted from;
Drone Guide to Understanding Airspace.
My understanding of this regulation ;
Drones in the 7-20kg category will have to register before their flight if they are planning on using airspace, therefore breaching the drone code 
so 400ft+ as I mentioned above.
Therfore it does not affect drone pilots.