Windscale: Britain's biggest nuclear disaster was broadcast on Monday, 8 October, 2007, at 2100 BST on BBC Two.

BBC: Windscale piles (NDA)

Macmillan issued a report that said the accident had been caused by "an error of judgement" by the Windscale workers.

BBC: Windscale piles (NDA)

After a serious fire at the Windscale atomic works in 1957, in which massive amounts of radioactive energy were released, the Cumbria site was rebranded Sellafield.

BBC: Renaming: Sleight of brand?