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Sales of organic wine are booming, and climate change is also leading increasing numbers of vineyards to move away from conventional production methods. The Spier estate in South Africa's Stellenbosch region looks set to become the country鈥檚 biggest organic wine producer. Charlotte Ashton visits them to see how they do it, and asks whether there are lessons for the UK鈥檚 burgeoning wine industry.

Produced and presented by Charlotte Ashton