The Care Quality Commission is set to introduce radical changes to the way hospitals in England are inspected.
Following on from the review carried out by Sir Bruce Keogh, which found that 14 trusts had high mortality rates, the changes will be introduced by the end of the month.
As part of the changes the CQC introduced a new method to assess the level of risk of poor care at each trust, and four London NHS trusts are amongst the worst six in the country.
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The 6km bike track will include 130m of the South Circular near Kew Bridge.
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Detectives investigating the Parsons Green terrorist attack have arrested a 17-year-old boy in Thornton Heath, south London.