Queen Elizabeth and Princess Diana’s rollercoaster relationship: 10 intimate photos show the close bond between Princes William and Harry’s mum and grandma, even as King Charles’ marriage crumbled

• The late British monarch and People’s Princess shared a polite and formal relationship, according to the latter’s biographer, but have also been pictured sharing cordial kisses on the cheek
• The two influential women remained close through the years, with the queen calling Diana ‘an exceptional and gifted human being’ in a speech at Buckingham Palace after the princess’ tragic death