Here's a look back at some of the worst ever disasters to hit the show ... This 'health snack' challenge made Apprentice history - but not for the right reasons. In a first for The Apprentice ...

It was Britain's worst nuclear disaster, but it is likely you have never heard of it. Unlike Chernobyl in Ukraine, or Fukishima in Japan, Windscale in Cumbria is not vivid in the public imagination.