allison mcdermott�*s contract was terminated days after she submitted an internal report critical ofent. she is now taking the organisation to court alleging she was dismissed for whistle—blowing. sellafield is contesting the case. the vast site in cumbria deals with some of the most hazardous raw materials in existence. the worry, from people we have spoken to, is that the culture here at sellafield can make it difficult for workers to come forward if they have concerns. and that, they say, could have a knock on effect on safety. at once the largest nuclear waste site in western europe. an internal staff survey commissioned by sellafield in 2018, and seen by the bbc, showed that 54% of employees agreed they can speak out about doing the right thing without fear of reprisal. a fall of 11 percentage points since the last survey in 2016. 30% of staff agreed they had seen evidence the organisation was changing for the better. again, a fall of 13 percentage points in two years. i will never forget an employee saying to me, when i was asking him questions with the culture, he said at sell