Detectives are investigating an attack on two other people in the same London street where a woman was believed to have been beheaded. Police said that they believed both were able to get out of a house in Nightingale Road, Edmonton without injury.
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England have been beaten by nine wickets against Pakistan in the first Test at Lord's.
Mayor of London Sadiq Khan is backing the scheme.
Sunday will be a fine day across much of Scotland and northern England, with much less coastal mist and low cloud than yesterday.