The Duke of Edinburgh faces a fourth day in hospital as he recuperates following exploratory abdominal surgery.
Philip, who is 92 tomorrow, was admitted to the London Clinic on Thursday following a garden party at Buckingham Palace and underwent the procedure on Friday.
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More than 200 people are expected at London's first Muslim Youth Festival which will look at stopping the radicalisation of young Britons.
A report by a London university has found that chief police officers use "predatory" behaviour towards junior staff.
A man from north London has been jailed for 27 years for owning guns and conspiring to supply drugs. Two others were also jailed.