We’re going behind the scenes at two former nuclear power stations – one that’s recently closed, and another that’s been out of action for 25 years. Both are at Hinkley Point in Somerset, in the south of England.What happens when the generators stop? We look into the unique challenges of cleaning up radioactive sites safely.Produced and presented by Theo Leggett(Image: Steam escapes from Hinkley Point B in 2022. Credit: Getty Images)