I have been given authority to fly within the London Restricted area (R157 - Hyde Park area) by NATS and also submitted, at their request, the necessary NOTAM. My requirements were very specific re height, time, LAT / LONG etc. and naturally had to provide evidence of PfAW (or is it now PfCO with the change of 'Aerial Work' to 'Commercial Operation'? in the latest IN-2016/073) and experiance as a professional operator. With the update on the DJI Go app allowing the PIC to override the NFZ areas, the question I ask is: does that allow override on all NFZs or just near airports etc (R157 is more to do with national security than airports)? Cheers and safe flying to all.