GREEN councillor Sian Berry vowed to block plans to demolish a west London council estate yesterday after being selected to fight next year’s London mayoral election.

Ms Berry (pictured), who came fourth for the Greens in the 2008 election and had the support of MP Caroline Lucas, was widely seen as the favourite to win selection.

On the left of the party, she will target traditional Labour voters but says Greens should not give Labour their second preference.