Cameras are being allowed behind the scenes at the Sellafield nuclear power plant as part of a season of TV shows exploring the atomic age.
Physicist Jim Al-Khalili will present Britain's Nuclear Secrets: Inside Sellafield. He said: "Little is known about Britain's nuclear industry so it's no wonder that the general public have tended to be so suspicious of it, sometimes with good reason. So telling the story of Britain's nuclear history, both the past failures and the recent successes, is vital."
The show, part of the BBC Four Goes Nuclear season, promises "unprecedented access to some of the country's most secret buildings."