A former NHS whistleblower has warned the 1000 confidentiality clauses preventing former public sector employees from speaking out about dangerous conditions at work, are only "the tip of the iceberg".
NHS whistleblower Gary Walker told Daybreak despite the Public Accounts Committee's best efforts, they "could not get the answers" on how many people hd signed a gagging order from the Treasury.
"Nobody in Government departments knew how much was being spent, so they asked the National Audit Office to look - they couldn't find out because the councils and other public bodies could not tell them.
"We are only looking at the tip of the iceberg."
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