Boris Johnson appears to have won his battle over control of London's fire service.
Opposition politicians on the fire authority have backed down in a fight over cuts after the Mayor threatened to sue.
In the Labour amendment, they said that they conceded to the Mayor on this occasion with great reluctance.
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Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
At least five people have suffered minor injuries but the cause of the blast is still unknown.
A songwriter from Harlesden who wrote a track for Beyonce's Lemonade album has been nominated for a Grammy Award.