The princess, who announced in January 2025 that she was in remission, has often spoken about the sense of empathy created by her experience of cancer and wanting to help others going through the same difficult journey.
"It's life-changing for anyone, through first diagnosis or post treatment and things like that, it is a life-changing experience both for the patient but also for the families as well," she said during a visit to a hospital in Essex last year.
Money raised by her mountain climbs will now be used for the The Centre for Holistic Wellbeing and Recovery intended to offer cancer patients a wider sense of recovery, beyond physical treatment, and addressing a sense of emotional, spiritual and social wellbeing.
Catherine's trip to the London hospital follows a visit on Thursday with her husband being launched in Liverpool.