The Camerons with the Queen and Prince Philip
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Royals lunch at No 10 to mark Prince Philip's birthday

The Queen and Prince Philip have been to lunch with the Camerons at 10 Downing Street in an event to mark Prince Philip's 90th birthday.

It is rare for the Prime Minister and the Queen to meet there, as Nicholas Witchell explains.

  • 21 Jun 2011
  • From the section UK
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