The UK's biggest health insurer has warned that treatment costs have become so expensive that hundreds of thousands of people are abandoning private medical cover.

Dr Natalie-Jane McDonald, the managing director of BUPA's UK Business, explains part of the issue is due to the "inefficiency and a lack of competition among consultancies and hospitals".

"We have a responsibility on behalf [of our members] to make sure the cost of healthcare is affordable," she told the Today programme.

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