Well yes it does go on all the time and with the NHS doing more and more private contracts then it will be open to abuse, I feel that all the tender process should be open for the public and that all bids should be published. 
Also whilst I sit on my soap box
Whilst some NHS staff are being told to take a cut in wages, should the management in the hospitals lead by example and reduce the wage that they receive?
Also is it time the NHS started charging patients for treatment who self inflict with drugs and alcohol.
Any thoughts welcome.