Flowers laid at memorial garden in Grosvenor Square
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9/11: Honouring the 67 Britons who died

11 September 2011 Last updated at 17:29 BST

Prince Charles and David Cameron have attended a service in Grosvenor Square, London, in honour of the 67 Britons who died in the 9/11 attacks.

Nicholas Witchell reports.