
Professor Charles Knowles
Professional statement
Professor Charles Knowles is chief academic officer and clinical director of research and innovation at Cleveland Clinic London. He is also professor of surgery at Queen Mary University of London and an honorary consultant colorectal surgeon at Barts Health NHS Trust and St Marks Hospitals. He is also chief medical officer of Amber Therapeutics Ltd.
Professor Knowles qualified from the University of Cambridge and undertook general surgical training and a PhD in London. His main research interests cover the development and evaluation of new technologies for the diagnosis and treatment of chronic functional and neuromuscular disorders of the bowel and pelvic floor (with focus on neuromodulation and cell therapies). Clinically, he is a key international opinion leader on chronic constipation, incontinence, pelvic organ prolapse, and GI neuromuscular diseases.
Professor Knowles holds honorary chairs at University College London and the University of Antwerp. He has authored 300 peer-reviewed publications (H-index: 68) as well as contributing to major international colorectal and general surgical texts, national guidance and health policy documents. He was awarded an honorary fellowship of the American Society of Colon and Rectal Surgeons in 2021. Aside from his day job(s), Professor Knowles is a semi-professional musician, songwriter and author. He also speaks some French, Spanish, and Portuguese (Brazilian).
Clinics

Cleveland Clinic London Colorectal Unit
Central London, 33 Grosvenor Place,Medical insurances accepted
Credentials
Professional experience
- 34 years of experience
- Lead Clinician for Colorectal Surgery, Cleveland Clinic London (2021 - 2023)
Subspecialties
- Obstructed defaecation syndrome
- Hirschsprung's disease
Professional memberships
- Royal College of Surgeons of England (fellow)
- Association of Coloproctology, Great Britain and Ireland
Education
- FRCS (Gen Surg), Intercollegiate Royal College Specialty Boards (2005)
- PhD, University of London (2000)
Teaching posts
- Chief Academic Officer, Cleveland Clinic London
- Professor of Surgery, Queen Mary University of London (present)
Positions in organisations
- Colorectal expert on UK All-Party Parliamentary committee for incontinence
- Chair of International Continence Society Guideline Committee of Incontinence
Publications and conferences
- Professor Knowles’ publications are available on his PubMed profile
- Professor Knowles’ publications are available on GoogleScholar
Languages spoken
- English