Cori Crider of the campaign group Reprieve has called on the Foreign Secretary William Hague to do more to ensure the release of Shaker Aamer, the Londoner who is still being held in Guantanamo Bay.
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The mayor took time out from City Hall to join Conservative party workers handing out leaflets in Uxbridge and South Ruislip.
No matter where you look, London's population is getting older - with the exception of one of the capital's boroughs.