The Government has so far set no limit on private corporations involved in the NHS.
File on 4's Gerry Northam looks at the record of private companies so far and asks whether there should be any limit.
Some GPs surgeries are now being taken over by private companies.
At present the few practices that are run privately are the exception rather than the rule.
Ministers have indicated they want more private and voluntary sector involvement in NHS community services.
To date, private firms have largely been interested in providing hospital services for the NHS.
By 2008 they are expected to carry out one in 10 non-emergency operations
Download or subscribe to this programme's podcast
Most Popular Now | 56,514 people are reading stories on the site right now.";