Defence Secretary Philip Hammond MP said:
"Whilst there is no reported threat to the London Olympics, the public expects that we put in place a range of measures aimed at ensuring the safety and security of this once-in-a-generation event. Ground-based air defence systems will form just one part of a comprehensive, multi-layered air security plan which, I believe, will provide both reassurance and a powerful deterrent.
“We have undertaken a wide programme of engagement with the communities affected, involving relevant local authorities, landowners, MPs, Council Leaders, and community meetings. These have shown that, while people understandably have questions and concerns which we have sought to answer, broadly speaking communities are supportive of our work.
“A small number of activists object to the deployment of these defensive measures and a legal challenge to the Government’s decision to deploy GBAD has been initiated. The MOD will defend these proceedings vigorously and is confident of defeating them.”
More top news
Police are appealing for information about a man who racially abused a 23-year-old woman and then began "throwing punches in her direction".
The conmen, including a former X Factor contestant, were sentenced for the 'heartless' scam, which preyed on vulnerable people.
Police are appealing for information about two sisters aged 12 and five who went missing three days ago.