Prince William and Kate Middleton keep up the royal tradition of supporting and working for charitable causes.

Following the footsteps of Princess Diana, the pair arrived at The Royal Marsden Hospital in South London to open the Oak Center for Children and Young People, a new unit that will treat children suffering with cancer.

Check out the photos.

Kate Middleton Prince William
Britain's Prince William and his wife Catherine, Duchess of Cambridge greet well wishers after visiting the Royal Marsden Hospital in Sutton, Southern England Reuters
Kate Middleton
Britain's Catherine, Duchess of Cambridge meets patient Fabian Bate, 9, at the new Oak Centre for Children and Young People at The Royal Marsden Hospital in Sutton, Southern England Reuters
Kate Middleton
Britain's Catherine, Duchess of Cambridge speaks to patient Beth Ansell, 18, at the new Oak Centre for Children and Young People at The Royal Marsden Hospital in Sutton, Southern England Reuters
Kate Middleton
Britain's Catherine, Duchess of Cambridge smiles as she arrives for a visit to the Royal Marsden hospital in Sutton Reuters
Kate Middleton
Britain's Catherine, Duchess of Cambridge greets well wishers after visiting the Royal Marsden Hospital in Sutton, Southern England Reuters
Leukemia Kate middleton London Kate middleton