NHS Whistleblower Gary Walker Arrives To Give Evidence To The Health Select Committee

LONDON, ENGLAND - NOVEMBER 01: Gary Walker, former chief executive of the United Lincolnshire hospitals NHS trust, arrives at the Health Select Committee, at Portcullis House on November 1, 2012 in London, England. The NHS whistleblower, who is today giving evidence to the committee, claims he was sacked from his post over raising concerns over patient safety and high patient mortality rates. (Photo by Bethany Clarke/Getty Images)