Stroke care in London is now world class - and it is all because some services were shut down.
The capital's stroke care was overhauled in early 2010. Instead of being spread across 30 hospitals as they used to be, services are now centralised on eight "super sites".
It has meant patients get fast, 24-hour access to the best care, saving hundreds of lives a year.
If a stroke is suspected, a patient is immediately taken to one of the eight centres. There they are assessed by a stroke specialist and given a brain scan within 30 minutes of arrival.
However, Prof Chris Ham, the think tank's chief executive, said they were still the "best hope of delivering essential reforms" in the NHS, as care needed to be moved out of hospital.
This is seen as vital because the ageing population and growth in long-term conditions such as dementia and heart disease mean people are more likely to benefit from support in the community to stay well rather than inpatient hospital care when their health deteriorates.
www.bbc.co.uk/news/health-39031546