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The London ColoRectal Clinic previously offered scheduled outpatient appointments at London Bridge Hospital but from September 2021 will be moving to Cleveland Clinic London from 14th September 2021. The practice has a growing group of patients based around London and internationally.


Privately insured and self-paying patients are both welcomed.

Our Strengths

Although the majority of our patients have conditions affecting the colon, rectum and anus, we have extensive experience treating simple and complex abdominal wall hernias and simple and advanced endometriosis.


Among the many benefits of consulting with us is that at Cleveland Clinic London where a majority of your care will be conducted, we adhere to the principle 'the patient comes first' in order to provide outstanding, compassionate care and service.


As a team, we provide this examplenary care and service regardless of your primary care provider and have access to comprehensive regular multidisciplinary team meetings, including colorectal cancer, inflammatory bowel disease, benign pelvic floor conditions, and complex abdominal wall hernias meetings at Cleveland Clinic London , to develop the best possible treatment options through the collaboration of experts.

More About Us


The private practice is led by Mr Joseph W Nunoo-Mensah who is currently a consultant colorectal and laparoscopic surgeon at King's College Hospital, London Bridge Hospital and Cleveland Clinic London. The practice offers state-of-the-art modern technology including advanced colorectal, pelvic floor and minimal invasive surgical expertise obtained from the University of Southern California, Los Angeles, CA, USA and the Mayo Clinic, Phoenix, Az, USA.

Mr Nunoo-Mensah is also a specialist for Piles Clinic UK which is a clinic passionate about helping patients find the best specialists in the UK, ensuring access to the very best services in a trusted, transparent, and discrete environment. Patients have access to our Professionals across London and Birmingham in the best, state-of-the-art private hospitals.

The London ColoRectal Clinic also provides medical expert witnesses and produces medico legal reports. Timely, clear, independent medical reports prepared by Mr Joseph W Nunoo-Mensah. We fully understands the requirements of instructing solicitors, in particular the restricted timescales for civil litigation. As we currently receives instructions for medico-legal reports, we will provide a no obligation quotation for the cost of the report and the time scale for the report.


The clinic also actively participates in organising surgical skills courses and providing educational materials for medical doctors and other related professionals. Courses include the basic surgical skills course and a novel open gastrointestinal stapling course at King's College Hospital. The London ColoRectal Clinic (previously known as The ColoRectal Surgeon) has been instrumental in working with the International Society of University Colon & Rectal Surgeons and King's College London to run an annual winter 'Debates & Dilemmas Colorectal Surgery' conference

About Us
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Has a 100 year long history and is a non-profit, multi-disciplinary academic medical center for over 100 year. 

Why Consult with Us

Anorectal symptoms and complaints are common and may be caused by a wide spectrum of conditions that affect the colon, rectum and anus. Although most conditions are benign and may be successfully treated in the outpatient clinics, a high index of suspicion for colorectal cancer should be maintained and all patients should be appropriately investigated.


We are consulted by patients with anorectal and colonic symptoms such us abdominal pain, anal pain, anal bleeding, rectal bleeding, rectal prolapse, itching around the anus, haemorroids, piles, constipation, diarrhoea, faecal incontinence.


We offer minimally invasive or laparoscopic surgery for conditions such as colorectal cancer, diverticular disease, diverticulitis, Crohn's disease, ulcerative colitis, and anal fistulae and anal fissures.


For patients with a family history of colon and rectal cancer or polyps, The London ColoRectal Practice offers a comprehensive bowel screening program.

Summary of conditions to consults us about:

Abdominal pain

Anal pain

Anal or rectal bleeding

Pus discharge from and around anus

Rectal prolapse

Itching around the anus

Presence of swelling or lumps in or around anus

Haemorrhoids or piles

Passage of mucus per rectum

Constipation or straining during defecation

Frequency of stool or diarrhoea

Faecal incontinence or soiling

We have specialist and general interest in:


Colon & rectal cancer (Bowel cancer) treatment

Bowel cancer screening

Diverticular disease

Anal cancer

Inflammatory bowel disease (Ulcerative colitis / Crohn's disease)

Diverticular disease


Anal fistula

Anal fissures

Pilonidal disease

Abdominal wall hernia


Bowel cancer screening & treatment
Bowel cancer screening & treatment

​Bowel Cancer (Colorectal cancer) and Screening

  • Bowel cancer is the second leading cause of cancer death in the United Kingdom, killing approximately 16,000 people each year.

  • Around 41,000 people are diagnosed with this disease each year in the United Kingdom, making it the fourth most common cancer.

  • Most cases of bowel cancer (95%) occur in people over the age of 50, however, it can occur at any age.

  • For men, the lifetime risk of developing bowel cancer is 1 in 14 and for women, it is 1 in 19.

If you have risk factors for colon cancer or are concerned about symptoms suggestive of bowel cancer, we are more than happy to provide you with all the options available to you for screening or diagnostic testing. These include FIT (Faecal Immunochemical Test) stool test, colonoscopy or CT 'virtual' colonoscopy.

Symptoms suggestive of colorectal cancer.


  • A change in bowel habits, such as diarrhoea, constipation or more-frequent bowel movements

  • Dark maroon or bright red blood in stool

  • Narrow stool

  • A feeling that your bowel doesn't empty completely

  • Abdominal pain

  • Unexplained weight loss

  • Weakness or fatigue

Please contact us if you would like more information or investigations.

Simple to Complex Abdominal Wall Hernia Repair

Whether you have a simple abdominal wall hernia or a complex abdominal wall hernia, usually greater than 10 cm in size, we have the expertise to repair these. If appropriate, we can repair small hernias with minimally invasive surgery, allowing a quicker repair to occur. However, complex abdominal wall defects, especially those following GI surgery and incisional hernias, may require anterior or posterior component separations (ACS/PCS) for repair. 

Every patient is unique, so Mr Nunoo-Mensah will offer you care and treatment tailored to meet your needs. If a wider multidisciplinary team is required to provide the best outcome, he works with dedicated plastic surgeons at Cleveland Clinic London, including Edmund Fitzgerald O'Connor, who specializes in plastic surgery and reconstructive surgery and may also recommend an abdomnoplasty to ensure an excellent outcome tailored to individual patient needs.

Hernia Repair


There is currently no cure for endometriosis. Endometriosis can be treated in several ways in order to reduce symptoms, improve quality of life, and improve fertility. The most common treatments for endometriosis that do not require surgery are hormone therapy and pain management. However, in the event surgery is required, it may involve excision (removal of the endometrial tissue using cutting) or ablation (destroying of the endometriosis cells using radiofrequency energy).

Cleveland Clinic London is proud to host some of the leading gynaecological surgeons in the country, including Ms Elizabeth Ball, with whom Mr Nunoo-Mensah collaborates closely to treat pelvic endometriosis that may involve the bowels. Contact us if you think you may have endometriosis or if you have a working diagnosis of simple or complicated endometriosis and would like to discuss your options.

State of The Art Procedures

State of The Art Procedures we perform:

It is important to consider short recovery time, a quick return to normal activity, low risk of complications and maintenance of functional outcomes when undergoing surgery for haemorrhoids, fistulas, or pilonidal disease. In order to achieve the best possible result, we are able to discuss with you minimally invasive procedures we perform. Below are some examples of these options:

  • Laser surgery for anal fistula, haemorrhoids and pilonidal disease

  • Other anal fistula surgery - including sphincter preservation techniques such as Permacol Paste Injection and BioLIFT procedures

  • Other haemorrhoidal surgery including Haemorrhoid artery ligation surgery (HALS) and stapled haemorrhoidectomy (PPH) procedures

Laser surgery

Haemorrhoid artery ligation surgery

Minimal Invasive Surgery
Robotic surgey

A wide range of colorectal diseases that previously required open surgery can now be diagnosed and treated with minimally invasive surgery at the London Colorectal Surgery . In addition to less postoperative pain and fewer major complications following surgery, minimally invasive surgery results in shorter hospital stays, faster recovery times, less scarring, less stress on the immune system, a smaller incision, and reduced operating time and costs for some procedures. We are y proud to offer:


  • Laparoscopic (keyhole/minimal invasive) surgery

  • Advanced laparoscopic surgical procedures including SILS – single incision laparoscopic surgery

  • Trans endoscopic microsurgery for small rectal tumours

  • Endoscopic mucosal resection of colorectal polyp


For investigating constipation and faecal incontinence we also offer:

  • Anorectal physiology (manometry)

  • 3D endorectal ultrasound tests etc for investigating constipation and faecal incontinence

Other services:

  • Colonoscopy & gastroscopy

  • Bowel cancer screening

  • Robotic Colorectal Surgery (Very soon!)

Our Outpatients

33 Grosvenor Pl, London SW1X 7HY
Outpatient consultation with Mr Nunoo-Mensah will be on Thursday am or Friday evening.

King's College Hospital, Denmark Hill, London SE5 9RS
Outpatient consultation with Mr Nunoo-Mensah will be on Wednesday evening 

Physical face-to-face consultation


A 30 min physical face-to-face consultation at our clinic for private insured patients and for self paying patients. The consultation cost for initial self paying patients will be £250. Follow-up appointments £200.

Virtual/Telephone Consultation

At The London Colorectal Clinic, we are now able to perform a telephone or web conference consultation.

The 30 min telephone or web consultations are £200 for self-paying patients. 

If you are based in an EU/UK country we will opt to perform a virtual or telephone consultation. If you are based elsewhere abroad we will perform a virtual consultation.

Available Consultations

Wednesdays 18:00 - 20:00 - Guthrie Clinic, King's College Hospital, London, SE5 9AE

Thursdays 08:00 - 12:00 - Cleveland Clinic London, 33 Grosvenor Pl, London SW1X 7HY

Fridays 16:00-20:00 - Cleveland Clinic London, 33 Grosvenor Pl, London SW1X 7HY

Other adhoc appointment dates or times may be available on request.

To request an appointment


  • If you have private health insurance please contact your provider to obtain authorisation for the consultation.

  • Either fill in the form below and provide as much information or reports, test etc which will enhance the consultation or

  • Contact Mr Nunoo-Mensah's PA Serena Ramzanal Tel: +44 (0) 203 423 7089, Mobile: +44 (0) 7514311196 or by email at



We are a fee-assured provider with the majority of insurers and work with all the major insurance companies.


A competitive self-pay package that includes consultations, surgery, and inpatient care is also available. Please contact us if you would like a quotation for a procedure before consultation.

NHS Patients Considering Private Care
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NHS waiting lists and waiting times are on the rise, and clinical treatment, tests, and surgery are delayed. The London Colorectal Clinic and Cleveland Clinic London are happy to assist you.

  • Are you worried about having colorectal cancer?

  • Are there delays in appointments to see your NHS GP?

  • Do you want personalised individualised care?

  • Do you want quicker diagnostic and treatment care?

  • Are there delays in your investigations or are you on a long NHS waiting list to have a procedure?

An outpatient appointment can be arranged, or if necessary timely investigations and treatments can be administered at The London Colorectal Clinic and Cleveland Clinic London.


Also, at Cleveland Clinic London you have access to multidisciplinary teams to review your previous NHS treatments, investigations and to suggest comprehensive, individualised care from multiple experts.


Additionally, you have the option to return to your regular NHS health care provider.

We would be pleased to speak with you about how we can enhance the care that is delivered by the NHS. Please click the form below and fill it out as completely as possible.

GP referrals

Thank you for considering referring you patient to The London Colorectal Clinic.


To refer you patient either (Option 1) complete the online referral form HERE and upload any necessary information for the consultation or (Option 2) contact us my phone or mail.

Serena Ramzanali

PA to Mr Nunoo-Mensah

40 Grosvenor Place, London, SW1X 7AW

Tel: +44 (0) 203 423 7622

Mobile: +44 (0) 7514311196



Mr Nunoo-Mensah is affiliated with the Piles Clinic UK & The Gut Clinic, a platform established by healthcare professionals who are committed to assisting patients in finding the best specialists available in the UK. As a result, patients can enjoy the best care in a trustable, state-of-the-art private hospital that offers transparency, confidentiality and a caring environment.

Medico-Legal Expert Witness

The London ColoRectal Clinic provides timely, clear, independent medical reports prepared by Mr Joseph Nunoo-Mensah.


Mr Nunoo-Mensah fully understands the requirements of instructing solicitors, in particular the restricted timescales for civil litigation, the limitations of expertise and the absolute need for independent, balanced consideration. He brings to bear:


  • Over 27 years clinical experience in general and colorectal surgery​

  • Strong academic background in Evidence Based Medicine

  • Sound grasp of legal principles / Civil Procedure Rules after having obtained a masters degree (LLM) relating to the practice of medicine and the administration of health care

  • Key points of case grasped, summarized & presented effectively

  • Scientific, analytical and logical approach


Mr Nunoo-Mensah currently receives instructions for medico-legal reports and he will provide a no obligation quotation for the cost of the report and the time scale for the report.


All reports will provide an unbiased opinion on the standard of care your client received and contain background medical information where needed.


Mr Nunoo-Mensah has a rapid turnaround for reports, including secure electronic delivery and all reports will be produced according to current CPR rules and protocols.

If you would like to contact us regarding our services please:

Educational Courses & Meetings

The London ColoRectal Clinic actively participates together with other educational bodies in organising surgical skills courses and providing educational materials for medical doctors and other related professionals.  


Course include:




Conferences include:



Consultant Colorectal & Laparoscopic Surgeon


Consultant Gynaecologist


Plastic and reconstructive surgeon

Meet the Team

Alison Walker

Company Director


Serena Ramzanali

PA (Cleveland Clinic London)


Tolu Salako

Educational Diector

Get in Touch

Get inTouch



Serena Ramzanali

PA to Mr Nunoo-Mensah

40 Grosvenor Place, London, SW1X 7AW

Tel: +44 (0) 203 423 7622

Mobile: +44 (0) 7514311196



Department of Colorectal Surgery

Hambleden Wing West- 2nd Floor
King’s College Hospital
Denmark Hill
London, SE5 9RS



Barbara Hibbert

PA to Mr Nunoo-Menah on 0203 299 3869


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