Smithy's perception on it all is that t'Government is absolutely keeking themselves that some pesky wrongdoers will try something that would spoil their self-aggrandising egofest Ollimpicks and make them look like minor pillocks. So therefore in response the entire nation's armed forces are to be deployed around a 25 mile radius centered around Ollimpick Village or whatever its called and the whole of London and the surrounding areas are completely closed and strictly prohibited for the duration of the Ollimpicks. Strictly a prohibited area both on ground and in the air for all with the exception from politicians, the armed forces, atheletes and folk daft enough to spend several hundred quid on a ticket to watch some folk run around an oval for a few minutes.
I find all the pant-pishing going on about airspace, security, transport etc. muchly amusing. One shall watch from afar with amusement as Britain's capital city grinds to a halt all because of a glorified school sports day. Tee hee hee