LONDON: Queen Elizabeth II, who turns 80 on Friday, is to stop using central London's iconic Buckingham Palace as her principal residence, The Times newspaper said Saturday. Though the palace would remain the royal headquarters, the queen was to make Windsor Castle, west of London, her primary residence and cut back her crammed schedule of engagements to reflect her age, the daily said. Paul Wybrew, the queen's most senior page for three decades, is set to move to the ancient castle, where the queen spends her weekends and is known to consider as home, The Times said.