During prime minister’s questions in the House of Commons on Wednesday, Labour leader Ed Miliband challenged Mr Cameron over the government's NHS reforms.

Mr Miliband highlighted the rejection of the Bill by medical colleges such as the RCN and a poll that found 98% of RCGP members wanted the Bill withdrawn. He said the prime minister had previously claimed health professionals supported the NHS reforms, and asked: ‘Can the prime minister give the house an update on the support for his Bill from health professionals?’

Mr Cameron replied: ‘There are thousands of GPs across the country not just supporting but actually implementing our reforms.'

He cited Dr Greg Conner as one such supporter, based in the Labour leader's own Doncaster constituency. ‘Let me give him just one example of a supportive GP… who hails from Doncaster.

‘Speaking as acting chairman of the Doncaster pathfinder CCG he said this:  "Becoming one of the first national pathfinding areas is a real boost for Doncaster".

'I think what is good for Doncaster is good for the rest of the NHS too,’ Mr Cameron said.

However, a spokesman for Doncaster PCT told GP that Dr Conner was no longer chairman of the Doncaster CCG and he had in fact left the area.

The spokesman said he was not sure whether the current chairman of Doncaster CCG, Dr Eric Kelly, held the same views.