Whistleblowers must be given proper support so they have the courage to come forward, the chair of the Commons Public Accounts Committee has said.
Margaret Hodge revealed six out of 10 people would not speak out over fears of reprisals from bullying colleagues.
She told ITV News there must be tougher government sanctions against this so it does not have a detrimental effect on uncovering scandals in the future.
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There was something very striking about the pact, which implies the new agreement could remain in place even if the prime minister does not.