The Olympic anti-doping labs at Harlow in Essex will be used once the games are over to develop new medical treatments for the NHS.
An announcement is expected to be made by the Prime Minister today confirming that the labs will become a new centre for the study of diseases in order to devise ways of dealing with them.
The high-tech facility will be the only one of its kind in the world.
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Cloud and outbreaks of rain will clear east this morning and it will turn brighter by the afternoon. Further showers are expected later.
Outbreaks of rain will move south east overnight, mostly clearing tomorrow morning. In the afternoon, a mix of sunshine and showers.
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