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Professor Charles KnowlesConsultant Colorectal Surgeon in Central London
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Professor Charles Knowles

Consultant Colorectal Surgeon in Central London

MA, PhD, FRCS, FACCRS (Hon)
GMC: 3585528

5.017reviewsReview

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Expert in:
Pelvic floor
Constipation
Bowel incontinence
Diverticulitis
Anal fistula surgery
Rectal prolapse
Obstructed defecation syndrome
Hirschsprung's disease
  • Information
  • CV
  • Reviews
  • Treatments
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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

    Cleveland Clinic London Colorectal Unit

    Central London, 33 Grosvenor Place,

    Medical insurances accepted

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

Credentials

Professional experience

  • 34 years of experience
  • Lead Clinician for Colorectal Surgery, Cleveland Clinic London (2021 - 2023)
  • Inaugural Clinical Director of Research, Cleveland Clinic London (present)
  • Consultant Colorectal Surgeon, Cleveland Clinic London (present)
  • Honorary Consultant Colorectal Surgeon, Barts Health NHS Trust (present)
  • Honorary Consultant Colorectal Surgeon, St Mark’s Hospital (present)
  • Internationally recognised expert in treating functional colorectal and pelvic floor problems
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Subspecialties

  • Obstructed defaecation syndrome
  • Hirschsprung's disease
  • Anorectal malformation
  • Digestive motility disorders
  • GI neuromuscular diseases
  • Intestinal pseudo-obstruction
View more

Professional memberships

  • Royal College of Surgeons of England (fellow)
  • Association of Coloproctology, Great Britain and Ireland
  • European Society of Coloproctology
  • International Neuromodulation Society
  • American Society of Colon & Rectal surgeons (Honorary Fellow)
View more

Education

  • FRCS (Gen Surg), Intercollegiate Royal College Specialty Boards (2005)
  • PhD, University of London (2000)
  • FRCS, Royal College of Surgeons of England (1996)
  • MBBChir, University of Cambridge (1992)
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Teaching posts

  • Chief Academic Officer, Cleveland Clinic London
  • Professor of Surgery, Queen Mary University of London (present)
  • Hon. Professor of Experimental Therapeutics, University College London
  • Hon. Professor of Colorectal Surgery, University of Antwerp
  • Professor Knowles is a GMC-recognised trainer
  • Contributions to major specialty textbooks
View more

Positions in organisations

  • Colorectal expert on UK All-Party Parliamentary committee for incontinence
  • Chair of International Continence Society Guideline Committee of Incontinence
  • Chair of European expert working groups in gastrointestinal physiology and neuromuscular diseases
  • Trustee of National Charity: Bowel Research UK
View more

Publications and conferences

  • Professor Knowles’ publications are available on his PubMed profile
  • Professor Knowles’ publications are available on GoogleScholar
  • Professor Knowles’ publications are available on ORCID
  • Professor Knowles’ publications are available on ResearchGate
  • Professor Knowles has delivered over 200 national and international lectures and published over 300 peer reviewed scientific papers
View more

Languages spoken

  • English
Registration number: 3585528

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

Frequently Asked Questions

What is Professor Charles Knowles's specialty?

Professor Charles Knowles is a consultant specialising in Colorectal Surgery, with extensive experience in assessing and treating patients within this field.

Which conditions and treatments does Professor Charles Knowles specialise in?

Professor Charles Knowles is a colorectal Surgeon who provides assessment and treatment for Anal fistula surgery, Rectal prolapse, Bowel incontinence, Constipation, Pelvic floor, Diverticulitis, Obstructed defecation syndrome and Hirschsprung's disease. During your consultation, you will be informed of the most suitable options following a personalised evaluation.

How many years of experience does Professor Charles Knowles have?

Professor Charles Knowles has 34 years of professional experience as a consultant colorectal Surgeon, providing specialist assessment and treatment in this medical field.

What do patients say about Professor Charles Knowles?

Patients give a rating of 5.0 out of 5 to Professor Charles Knowles, a score considered excellent. This average is based on 17 verified patient reviews, reflecting the experience of those who have attended an appointment.

Are Professor Charles Knowles's reviews verified?

Yes. All Professor Charles Knowles's reviews come from verified patients who have attended either an in-person or an e-Consultation appointment. We use a system that ensures authenticity and prevents fake reviews. Some profiles may also display reviews from other platforms, which follow their own verification policies, with the source always clearly indicated.

Where does Professor Charles Knowles practise?

Professor Charles Knowles practises in Central London at 33 Grosvenor Place, offering in-person care and access to services as a colorectal Surgeon.

How can I book an appointment with Professor Charles Knowles?

You can book an appointment with Professor Charles Knowles directly from this page by selecting the time that suits you best. Alternatively, you can call the phone number shown if you prefer personalised assistance.

Does Professor Charles Knowles see NHS patients?

Many specialists featured on Top Doctors also hold NHS positions. However, appointments arranged for Professor Charles Knowles through this platform are private, either self-pay or covered by private medical insurance.

Does Professor Charles Knowles offer private appointments?

Yes, Professor Charles Knowles offers private appointments for patients seeking flexible and direct access to a consultant colorectal Surgeon.

Does Professor Charles Knowles offer online consultations?

At the moment, Professor Charles Knowles does not offer online consultations. You can book an in-person appointment from this page or call +44 2076650453. When calling, please mention that you are a Top Doctors patient.

Does Professor Charles Knowles accept insurance?

Professor Charles Knowles works with the following private medical insurance providers: Bupa, AXA, AVIVA, Cigna, WPA, Simply Health, Allianz, CS Healthcare, Vitality, The Exeter Friendly, Pru Health, Groupama, April, Freedom, National Assurance, General Medical, Saga, Healix, Legal & General Insurance, Health-online, Benenden Health , Alliance Health Group, Police Mutual, Aetna, Tricare, Asia Medical Assistance, AIG, Health Now, Humanis, International SOS, Standard Life, Bupa Global and I’m paying with insurance. If your insurer is not listed, you may contact the practice directly to confirm your coverage.

What is Professor Charles Knowles's availability?

Professor Charles Knowles's availability depends on the appointment slots open at any given time. On this page, you can check current availability, and if no slots are shown, you can request an appointment or contact the practice directly.

What payment methods does Professor Charles Knowles offer?

You can pay for your consultation with Professor Charles Knowles using the following methods: Self-paying.

What languages does Professor Charles Knowles speak?

Professor Charles Knowles is a colorectal Surgeon who offers consultations in English.

How is Professor Charles Knowles selected to appear on this platform?

All doctors listed on Top Doctors, including Professor Charles Knowles, undergo our rigorous selection process. Only one in five specialists meets the required standards to be included.
Discover Top Doctors' rigorous medical selection process.
The doctor, or where applicable the hospital or medical centre in which the doctor provides services, undertakes to keep the information relating to the prices of services published on their profile on the Top Doctors platform up to date at all times, ensuring that such prices correspond to those effectively charged to patients. In the event of any discrepancy between the published price and the price ultimately charged to the patient, the doctor and/or the relevant hospital or medical centre shall be solely liable towards the patient and towards Top Doctors for any claim or financial difference arising therefrom.

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Cleveland Clinic London Colorectal UnitCentral London, 33 Grosvenor Place,
Payment methodSelf-paying
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