Margaret Haywood, 58, helped expose the neglect of elderly patients at the Royal Sussex Hospital in Brighton for the BBC in 2005.
This week an NMC fitness-to-practise panel found her guilty of misconduct and ruled Ms Haywood had 'failed in her obligations as a nurse'.
The panel said that although conditions in the ward were 'dreadful' she should not have breached patient confidentiality.
Ms Haywood, from Liverpool, told the BBC: 'I am absolutely devastated and upset by it all. I think I have been treated very harshly.'
'It is a serious issue and I knew it was a risk I was taking, but I thought the filming was justified and it was in the public interest.'
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