Home Secretary Theresa May should take action against the extremist Muslims Against Crusades group, a Tory MP said after being threatened by the group at a constituency surgery in north London.

Up to a dozen protesters forced their way into a north London mosque where Mike Freer was meeting constituents, prompting officials to lock him in a private room for his own safety.

In a chilling message ahead of the incident on the group's website, they referred to Labour MP Stephen Timms - who was stabbed while holding a surgery in east London last year - warning the attack on him should serve as a "piercing reminder" to politicians that "their presence is no longer welcome in any Muslim area".

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