Witness!
'I was only a youngster at the time and it was just a great big holiday really, a great big skylark. I thought it was like any bomb - bang, and you were all right. They didn't tell us about radiation....'
'When people see an atom bomb on television they haven't got a clue. These bombs literally filled everywhere. Everywhere.'
'It's a terrific sight, beautiful: you wonder that something so beautiful could be so destructive. It's as simple as that.'
Between 1952 and 1958 20,000 servicemen witnessed 21 British atmospheric nuclear tests in Australia and the South Pacific.
Derek Robinson presents their testimony - of the bomb and of the deadly legacy it has bequeathed to many of them. Producer SIMON ELMES (R)