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Woodlands across the UK are under attack by several major diseases and tens of thousands of trees are being felled as a result. Anna Hill hears what's being done to kerb the outbreaks and how countryside visitors could be making the problem worse.

Also how top restaurateurs are sourcing food from our beaches and how a rare flock of experimental sheep are producing wool worth ten times that of traditional British animals.

Produced by Anne-Marie Bullock.