File photo dated 04/12/18 of the Duke and Duchess of Cambridge arriving at Kensington Palace, London, to host a Christmas party for families and children of deployed personnel from RAF Coningsby and RAF Marham serving in Cyprus. The Duchess of Cambridge will have spent a decade as an HRH when she and the Duke of Cambridge mark their 10th wedding anniversary on Thursday. Issue date: Wednesday April 28, 2021.