Proposal by a "security review" to have a No Fly zone at 1,500ft/1.5nm around Windsor Castle
Windsor Castle no-fly zone application after security breach - BBC News
Presumably this will then close down Heathrow whenever they are on easterlies, where landing aircraft would cut this zone. Or do they expect some desperately curved, stable last second, approach ?
A more ludicrous "must be seen to be doing something" response to the intruder who was found climbing over the hedge there is hard to imagine. Isn't it all Class A airspace there anyway ?