Some 50 years ago thousands of excitable young servicemen landed on the white sands of a Pacific paradise to oversee Britain's testing of early nuclear bombs. But what happened next damaged them mentally and physically for life, some claim, and now they want to be compensated.

Dressed in overalls, white protective gloves and a balaclava, 21-year-old naval cook Dougie Hern was ordered to sit on the beach, back to the bomb, his knees pulled up, eyes closed and hands over his face. A countdown began...three, two, one

"We saw a bright, brilliant light," he recalls. "It was as if someone had switched a firebar on in your head. It grew brighter and you could see the bones in your hands, like pink X-rays, in front of your closed eyes."