Prince Philip is in the driving seat! The Queen greets President Obama and First Lady Michelle on the Windsor Castle golf course before the Duke, 94, drives them 400 yards to the door for lunch


The US President is joined by his wife Michelle for the intimate meeting at Windsor Castle - and the couple will later dine with the Queen's grandchildren, Princes William and Harry. Mr Obama, who landed at London's Stansted Airport last night for the start of an official visit to Britain, has been staying at the home of the US ambassador. This morning he departed the residence near Regent's Park in his enormous motorcade, before taking his Marine One helicopter to Windsor, in Berkshire.

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