Toby Sadler joined police officers closing down a cannabis factory in Dulwich as part of the Met's Operation Hawk.
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Police say indecent images of children have been found at the home of a deputy head teacher, who was recently found dead.
London’s mayor attempted to inject a mood of optimism into the Tory conference in Birmingham after recent defections to UKIP.
Richard Barnes, a former Deputy Mayor of London under Boris Johnson, has defected to UKIP. Here's why.