The Duchess of Cambridge will visit Great Ormond Street Hospital (GOSH) to open the latest phase in the institution's ambitious redevelopment project.
Kate will meet young patients and their families to hear about their experiences of the enhanced facilities in the completed Mittal Children's Medical Centre.
The centre has transformed the hospital's inpatient facilities and fulfils its goal of providing modern accommodation for all the young patients, and allowing parents or carers to stay comfortably by their bedside.
It was completed over two stages, first the Morgan Stanley Clinical Building was created followed by the recently finished Premier Inn Clinical Building.
The second clinical building involved redeveloping and refurbishing the children's hospital's cardiac wing and is now home to a new surgery centre alongside inpatient wards for medical specialties like infectious diseases and cardio-respiratory.
During the visit Kate will also meet staff caring for young patients and talk to clinicians carrying out cutting edge research to help the most seriously ill children.
Later Kate, who is patron of the All England Lawn Tennis and Croquet Club, will visit Bond Primary School in Mitcham, south London to see the work of the Wimbledon Junior Tennis Initiative.