Primary radar has bad accuracy in altitude. It has many blank spots and gives returns on anything from birds to kites etc and it suffers from clutter, interference, noise etc.
Would that apply to an airborne radar as well, i.e. AWACS? Could your flight be picked up by satellite? Will the UK government employ such 'safety' measures?
There's a government website in the UK where I believe you can log a petition to the government and collect signatures. I think someone should raise one to pass a motion to effectively ban any such events being organised in London in the future. The city is already huge, overcrowded, the transport infrastructure is barely coping. It is already an extremely popular destination for tourists, language students, academic students, business people, rock stars, artists and broad range of filthy rich people. London does not need to become anymore popular. It should rather be downsized.
Golf-Sierra