Four suspected armed robbers were arrested yesterday in an operation by the Metropolitan Police's Flying Squad. It followed two weeks of surveillance where the officers identified the suspects - they are believed to have been involved in up to 11 robberies.
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London and the worlds has united on Twitter in defiance of the West minster attack #prayforlondon #wearenotafraid
London was today a city of sirens and half mast flags in the wake of another terror attack.
MPs said they would "carry on" and go to work "as usual" in defiance of the terrorist attack outside the Palace of Westminster.