Professor Charles Knowles

MA, PhD, FRCS, FACCRS (Hon)
GMC: 3585528
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Expert in:
Pelvic floor
Constipation
Bowel incontinence
Diverticulitis
Anal fistula surgery
Rectal prolapse
Obstructed defecation syndrome
Hirschsprung's disease

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 profile image

    Medical insurances accepted

    I'm paying for myself
    Bupa
    AXA
    AVIVA
    Cigna
    WPA
    Simply Health
    Allianz

Credentials

Professional experience

  • 34 years of experience
  • Lead Clinician for Colorectal Surgery, Cleveland Clinic London (2021 - 2023)
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Subspecialties

  • Obstructed defaecation syndrome
  • Hirschsprung's disease
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Professional memberships

  • Royal College of Surgeons of England (fellow)
  • Association of Coloproctology, Great Britain and Ireland
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Education

  • FRCS (Gen Surg), Intercollegiate Royal College Specialty Boards (2005)
  • PhD, University of London (2000)
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Teaching posts

  • Chief Academic Officer, Cleveland Clinic London
  • Professor of Surgery, Queen Mary University of London (present)
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Positions in organisations

  • Colorectal expert on UK All-Party Parliamentary committee for incontinence
  • Chair of International Continence Society Guideline Committee of Incontinence
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Publications and conferences

  • Professor Knowles’ publications are available on his PubMed profile
  • Professor Knowles’ publications are available on GoogleScholar
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Languages spoken

  • English
Registration number: 3585528

Content

Treatments

The doctor is expert in

Anal fistula surgery

Bowel incontinence

Constipation

Diverticulitis

Hirschsprung's disease

Obstructed defecation syndrome

Pelvic floor

Rectal prolapse

The doctor also specialises in:

Abdominal pain

Anal abscess

Anal fissure

Anal fistula

Anal laser surgery

Anorectal malformation

Blood in stool (rectal bleeding)

Chronic diarrhoea

Colectomy

Colitis

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