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Charlotte Smith and Vick Hope are in the east of England following the journey of Britain’s sugar beet, 100 years after the first production of home-grown sugar. In Norfolk, Vick joins farmers racing to lift the last of the season’s crop, while Charlotte heads inside one of the country’s biggest processing plants to discover how those muddy roots are turned into sugar.

Also, Tom Heap investigates what’s really in the sewage sludge spread as fertiliser on our fields as the government launches a consultation on reforming how it’s used in British farming.