Cancer charities say they are "deeply concerned" at moves to restrict medicines available through a special fund set up by the prime minster.

The Cancer Drugs Fund was a key part of David Cameron's 2010 election campaign.

It gives patients in England access to effective treatments deemed too expensive for hospitals to fund.

More than 40 drugs, around half the total, will be reviewed in mid-December as new rules on cost-effectiveness are introduced by NHS England.

Six drugs in danger of being removed from the list of accepted medicines are for breast cancer.

They include Kadcyla, which extends life by an average of six months and costs £90,000 a course as well as drugs such as Avastin.

For more details, go to: http://www.bbc.co.uk/news/health-30037934