This morning' s COBRA meeting, chaired by Mr Cameron, was attended by Home Secretary Theresa May, Defence Secretary Philip Hammond, Mayor Boris Johnson, Met Commissioner Sir Bernard Hogan-Howe, and Assistant Commissioner Cressida Dick.
The Minister for Faith and Communities Baroness Warsi, Communities Secretary Eric Pickles and the British intelligence agencies.
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US horror filmmaker Wes Craven, best known for A Nightmare on Elm Street and the Scream movies, has died at the age of 76, his family said