The Mayor of London, Boris Johnson is to attend a major conference on how to tackle gang violence in the capital .
Speakers include Kevin G. O'Connor, the Assistant Police Commissioner for New York City and the Metropolitan Police Commissioner Bernard Hogan-Howe.
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The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
A 37 year old man who was taken to hospital after getting into difficulty in a stretch of water near Maidenhead has died.
Jonty Bravery, who is mentally ill, has been jailed for 15 years after throwing a six year old boy from the Tate modern balcony.