Prince Harry, the Duchess and Duke of Cambridge with their wands on the set used to depict Diagon Alley in the Harry Potter Films
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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.