The Ministry of Defence says that similar missile defence systems have been deployed at all recent Olympic Games.
They will be in place by mid-July, along with Royal Navy helicopter carrier HMS Ocean (which will be moored in the River Thames), Royal Air Force Typhoon jets (which will be temporarily stationed at RAF Northolt), and Puma helicopters (at a Territorial Army centre in Ilford).
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The average increase across the capital is 9.2% this year - with areas in the east and south of the city up by 15-16%.
The University of South Wales opened a centre in the Docklands in London, but has attracted no students and has been forced to close.
Mark Howell had his membership cancelled after a women who rented one of his rooms gave him a massage, according to reports.