The Duke of Edinburgh shook hands with medical staff at the London Clinic today after being discharged from the hospital.
Prince Philip will now return home and is expected to spend two months convalescing.
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The 35-year-old singer could face up to 30 days in jail if he is charged with breaking election laws in his hometown.
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The UK only managed to rank 20th on the World Economic Forum's (WEF) index of nations - a slide from 9th position in 2006.