England's National Health Service (NHS) is one of the largest employers in the world. For all its faults, it is something British people are immensely proud of, which is why the government's plans for the biggest reform in its history have become hugely controversial.
Sarah Montague talks to the Secretary of State for Health, Andrew Lansley, who wants to hand control of 80% of the NHS's budget to family doctors, so that they - rather than bureaucrats - can decide where the money goes.
Will it work or will it sink both the NHS and the government?
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You can watch the full interview on Tuesday 15 February 2011 on BBC World News at 0430, 0930, 1530 and 2130 GMT and on BBC News Channel at 0430 and 2330.