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Politicians asked: why are food prices on the rise?

29 November 2010 Last updated at 12:15 GMT

Food prices are on the way up, and there are calls for politicians to take action in these austere times.

Giles Dilnot reports from The Ministry of Food exhibition at the Imperial War Museum and spoke to Richard Lim from the British Retail Consortium and Andrew Simms from the New Economics Foundation.

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