- 4 updates
The Chair of the Health Select Committee has told ITV News Central that they need to delivery a change of culture when it comes to gagging clauses in the contracts of ex health service employees.
Mr Walker has urged MPs to help him expose further details, saying he could not say more "without incurring a much bigger risk of being sued by the NHS".
"I am still gagged. There's nearly 3,000 pages of evidence of which I have only been able to talk about a few. Those are the things I would like the health committee to expose," he said.
The BBC reported that Mr Walker had been threatened with legal action because of the interview.
An NHS Commissioning Board spokesman told the Daily Mail:
The former head of an NHS trust which is being investigated over high mortality rates has spoken out over patient safety concerns - in defiance of a legal gag.
Gary Walker was sacked in 2010 as chief executive of United Lincolnshire Hospitals Trust for gross professional misconduct over alleged swearing at a meeting.
He claims he was forced to quit for refusing to meet Whitehall targets for non-emergency patients and was then gagged from speaking out as part of a settlement deal.
He told BBC Radio 4's Today: