Shadow health secretary Andy Burnham is set to argue today that all new contracts between hospitals and the private sector should be put on hold until next year's general election. He will claim the Coalition has no mandate to press ahead with "far-reaching and forced privatisation" of services, including cancer treatment.
Private companies received more than £10bn of public money last year. Here are four private firms currently working in the NHS.
Part-owned by Sir Richard Branson's Virgin Group in 202. Signed a £500 million five-year contract to run a wide variety of health services in Surrey. Formerly called Assura Medical.