Is there the future of agriculture in the streets of the city?

A company is building lettuce in an abandoned air-raid shelter in London. But what are the advantages and disadvantages of vertical agriculture?

We went to Clapham to meet one of the founders, Richard Ballard.

Video reporter: Alex Dackevych

For more information about Focus on Farming, visit our website at www.bbc.co.uk/focusonfarming

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