Prince William and wife Kate today visited the Royal Marsden hospital to open a new ?18 million children's cancer unit.
The Duke and Duchess of Cambridge are meeting patients and their parents during a tour of the centre, which has been built to treat day and inpatients.
And there will be a special role for cancer patient Alice Marples, 12. Alice interviewed William for CBBC Newsround two years ago, and will today present Kate with a bouquet ...