Police have also taken the unusual step of naming 22-year-old Jamie Marsh-Smith who they want to speak to in connection with the murder. He is known to have links to Tottenham, Hackney, Camden and Kilburn.
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The attacker grabbed her dog lead wrapped it round her neck and started to strangle her before running away.
Less than a third of the money raised for those affected by the Grenfell Tower fire has reached their pockets, according to new data.
Mr Barrymore's claim is in excess of £2.4 million.