Exclusive: Leader challenges Labour to match £500m pledge, to be paid for with US-inspired share buyback tax

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The Liberal Democrats would extend free school meals to all primary schoolchildren, starting with those in poverty, Ed Davey has said in a challenge to Labour to match the pledge.

Speaking in his first newspaper interview of the general election campaign, the Lib Dem leader announced a manifesto policy aimed at nearly 1 million more children living in poverty in England and their families.