The Duke and Duchess of Cambridge went abroad in the half-term school holiday last week with their children, Prince George, Princess Charlotte and Prince Louis. The family were spotted outside the exclusive Windsor Suite on Thursday afternoon, which is located inside London Heathrow Airport's Terminal 5, and reserved specially for the Royal Family. While it's not known where the family went to for the holiday, it is speculated that the Cambridges might be on their way to Greece for the wedding of Princess Diana's godson Prince Philippos.