The London ColoRectal Clinic, established in 2008, has been a global leader in delivering world-class care to patients from London and beyond. Renowned for its expertise, the clinic specializes in managing colorectal cancers, benign anal conditions, complex and straightforward abdominal wall hernias, and simple to advanced cases of endometriosis. With a commitment to excellence and patient-centered care, it continues to set the gold standard in colorectal and abdominal health.
Our principle
'our patients comes first' in order to provide outstanding, compassionate care and service
Our Strengths
When you choose to consult with us, you gain access to the unparalleled care and expertise of Cleveland Clinic London. Here, the majority of your treatment is delivered through a highly collaborative, team-based approach that ensures exemplary care and service. Within this exceptional network, you benefit from comprehensive, regular multidisciplinary team meetings. These include expert discussions on colorectal cancer, inflammatory bowel disease, benign pelvic floor conditions, and complex abdominal wall hernias. By harnessing the collective knowledge of our specialists, we craft the most effective and personalized treatment plans tailored to your unique needs.
The private practice is spearheaded by Mr. Joseph W. Nunoo-Mensah, an esteemed consultant colorectal and laparoscopic surgeon currently serving at King's College Hospital, London Bridge Hospital, and Cleveland Clinic London. The practice integrates state-of-the-art technology with expertise in advanced colorectal, pelvic floor, and minimally invasive surgery -skills honed at renowned institutions such as the University of Southern California, Los Angeles, USA, and the Mayo Clinic, Phoenix, USA.
Mr. Nunoo-Mensah also collaborates with The Gut Clinic UK, a specialized service dedicated to connecting patients with the UK's best specialists. The clinic ensures access to premier medical care in a trusted, transparent, and discreet environment. With a presence in both London and Birmingham, patients are treated at world-class, private hospitals equipped with cutting-edge facilities.
The London ColoRectal Clinic further offers medico-legal services, including expert witness reports prepared by Mr. Nunoo-Mensah. These reports are timely, clear, and independent, meeting the rigorous requirements of instructing solicitors, particularly within civil litigation time constraints. We provide no-obligation quotations detailing report costs and timelines, ensuring clarity and professionalism throughout the process.
In addition to clinical and legal services, the clinic is committed to medical education. It actively organizes surgical skills courses and provides educational resources for medical professionals. These include the Basic Surgical Skills Course and an innovative Open Gastrointestinal Stapling Course held at King’s College Hospital.
The London ColoRectal Clinic has also been instrumental in collaborating with the International Society of University Colon & Rectal Surgeons and King’s College London to host the annual Debates & Dilemmas in Colorectal Surgery Conference - a cornerstone event for advancing knowledge in the field.
Our Goals
To Help You
-
Gain a comprehensive understanding of your treatment, ensuring you're fully informed at every stage.
-
Detect potential issues early, giving you the best chance for successful treatment.
-
Effectively manage symptoms to help you maintain a high quality of life.
-
Achieve the best possible outcome with a range of treatments for bowel cancer, from advanced surgical techniques to the latest approaches in chemotherapy and radiotherapy.
Our Commitment to You
-
We will treat you with sensitivity, compassion, and respect.
-
We will actively listen to your concerns.
-
We will answer all your questions thoroughly.
-
We will explain our findings in clear, simple, and understandable language.
Anorectal symptoms and complaints are common, arising from a wide range of conditions affecting the colon, rectum, and anus. While most issues are benign and can be effectively managed in outpatient settings, it is crucial to maintain a high index of suspicion for colorectal cancer. Proper evaluation and investigation are essential for all patients.
1
Our practice specializes in diagnosing and treating patients with a variety of anorectal and colonic symptoms, including:
-
Abdominal pain
-
Anal pain
-
Anal or rectal bleeding
-
Rectal prolapse
-
Itching around the anus
-
Hemorrhoids (piles)
-
Constipation or straining during bowel movements
-
Diarrhea or frequent stools
-
Fecal incontinence or soiling
-
Passage of mucus or pus from the rectum or around the anus
-
Presence of swelling or lumps in or around the anus
2
What we have specialist and general interest
-
Colon & rectal cancer (Bowel cancer) treatment
-
Bowel cancer screening
-
Diverticular disease
-
Anal cancer
-
Inflammatory bowel disease (Ulcerative colitis / Crohn's disease)
-
Diverticular disease
-
Haemorrhoids
-
Anal fistula
-
Anal fissures
-
Pilonidal disease
-
Abdominal wall hernia
-
Endometriosis
3
Our Approach
We provide advanced, minimally invasive, and laparoscopic surgical solutions for conditions such as:
-
Colorectal cancer
-
Diverticular disease and diverticulitis
-
Crohn’s disease
-
Ulcerative colitis
-
Anal fistulae and fissures
CLEVELAND CLINIC FOUNDATION
Has a 100 year long history and is a non-profit, multi-disciplinary academic medical center for over 100 year.
-
Globally, colorectal cancer (bowel cancer) is the third most common type of cancer and the second leading cause of cancer-related death.
-
In 2022, the World Health Organization reported 1.93 million new colorectal cancer diagnoses, with approximately 900,000 deaths (46%) attributed to the disease (see Figure 1 below).
-
The countries with the highest incidence rates are shown in Figure 2.
-
Due to its large population, Asia accounts for approximately 50% of all diagnosed colorectal cancer cases (see Figure 3).
-
In the UK, around 41,000 people are diagnosed with colorectal cancer each year, and approximately 16,000 people die from it annually.
-
Most cases of bowel cancer (95%) occur in individuals over the age of 50, though it can develop at any age. Nevertheless, there is growing concern about the rising incidence of colorectal cancer in younger patients.
-
The lifetime risk of developing bowel cancer is 1 in 14 for men and 1 in 19 for women.
Figure 1:
Figure 2:
Figure 3:
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
Unfortunately, symptoms have a poor correlation with the diagnosis of colorectal cancer, with a positive predictive value ranging from 5% to 15%.
The most effective way to prevent colorectal cancer is through preventative testing, such as a colonoscopy, which can detect and remove premalignant polyps.
Countries that utilize colonoscopy as a screening tool for the early detection of premalignant and malignant colorectal conditions have definitively demonstrated a reduction in both the incidence and subsequent mortality associated with the disease (See Figure 4).
Figure 4:
Please contact us if you would like more information or investigations.
For individuals with a family history of colorectal cancer or polyps, The London ColoRectal Practice offers a comprehensive bowel screening program tailored to your needs. Early detection and intervention are key to preventing serious complications and ensuring optimal outcomes.
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.
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.
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
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
CLEVELAND CLINIC LONDON
Cleveland Clinic Outpatient, 33 Grosvenor Pl, London SW1X 7HY
Cleveland Clinic Moorgate Outpatient Centre, 55 Moorgate, London, EC2R 6BH
Cleveland Clinic Portland Place Outpatient Centre, 24 Portland Pl, London W1B 1LU
GUTHRIE CLINIC
King's College Hospital, Denmark Hill, London SE5 9RS
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
Tuesday 12:00 - 16:00 : Cleveland Clinic Moorgate Outpatient Centre, 55 Moorgate, London, EC2R 6BH
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 jnunoomensmedsec@ccf.org
.
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 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 Facing Any of These Challenges?
-
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?
How We Can Help
We offer:
-
Prompt outpatient appointments tailored to your needs.
-
Access to timely investigations and treatments.
-
A multidisciplinary team at Cleveland Clinic London to review prior NHS treatments, investigations, and offer expert, comprehensive, individualised care.
You also have the flexibility to return to your regular NHS healthcare provider following your consultation or treatment with us.
Let us enhance your care while complementing the NHS services. Click the form below and complete it to get started. We look forward to assisting you.
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.
PA to Mr Nunoo-Mensah
40 Grosvenor Place, London, SW1X 7AW
Tel: +44 (0) 203 423 7622
Mobile: +44 (0) 7513 712440
Email: jnunoomensmedsec@ccf.org
Key Highlights:
-
Extensive Clinical Experience: Over 27 years in general and colorectal surgery, with expertise in complex and advanced cases.
-
Academic Excellence: Master’s degree (LLM) in Legal Aspects of Medical Practice, providing a strong foundation in legal principles and Civil Procedure Rules (CPR).
-
Evidence-Based Analysis: Solid background in Evidence-Based Medicine, ensuring all evaluations and reports are grounded in scientific rigor.
-
Effective Communication: Proven ability to identify key case points, summarize them clearly, and present findings in a scientific, analytical, and logical manner.
Services Offered:
I currently accept instructions for medico-legal reports and provide:
-
Unbiased Opinions: Comprehensive evaluations of the standard of care received by clients, including relevant medical background information.
-
Efficient Turnaround: Rapid preparation of reports, with secure electronic delivery, fully compliant with CPR rules and protocols.
-
Transparent Quotations: No-obligation quotes for report costs and timeframes.
Case Experience:
To date, I have handled a significant number of medico-legal cases, comprising a mix of personal injury and clinical negligence claims. These cases have been evenly distributed between claimants and defendants.
Consulting Venue:
All medico-legal consultations are conducted at: Guthrie Clinic, King’s College Hospital, London, SE5 9RS
Key Features of Our Reports:
-
Unbiased opinions on the standard of care provided to your client.
-
Inclusion of relevant background medical information where appropriate.
-
Adherence to current CPR rules and protocols.
-
Fast turnaround times, with secure electronic delivery of reports.
If you are interested in our services or would like to discuss your requirements:
Contact us at:
Serena Ramzanali/Marsha Ming
PA to Mr Nunoo-Mensah
40 Grosvenor Place, London, SW1X 7AW
Tel: +44 (0) 203 423 7622
Mobile: +44 (0) 7514311196
Email: jnunoomensmedsec@ccf.org
Or complete the Get-In-Touch contact form below
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:
SUMMARY
Mr. Joseph Nunoo-Mensah is a distinguished colorectal surgeon, renowned for his exceptional expertise in colorectal cancer, inflammatory bowel disease, pelvic floor disorders, and advanced proctology, including the management of complex fistulae and haemorrhoids. He holds dual appointments at the Cleveland Clinic London and King’s College Hospital NHS Foundation Trust, where he continues to advance patient care and medical innovation.
In his practice, Mr. Nunoo-Mensah is able to offer state-of-the-art, current treatments, including minimally invasive laparoscopic abdominal and robotic surgery.
He completed his medical training at Queen’s Medical School, University of Nottingham, earning dual degrees in Medical Science and Medicine & Surgery in 1993. His surgical journey includes foundational training at John Radcliffe Hospital, Oxford, and advanced surgical training in Manchester. He holds fellowships from the Royal College of Surgeons of England (FRCS and FRCS Gen Surg) and obtained his Certification of Completion of Training (CCT) in General Surgery in 2008. Mr. Nunoo-Mensah pursued advanced laparoscopic surgery training at the Mayo Clinic, Arizona, and specialized colorectal disease training at the University of Southern California. Simultaneously, he completed a Master’s degree in Legal Aspects of Medical Practice from Cardiff University.
Since 2008, he has served at King’s College Hospital as a colorectal surgeon and head of the colorectal surgery department, overseeing the colorectal cancer multidisciplinary team and anorectal physiology laboratory. Additionally, he is an Honorary Senior Lecturer at King’s College London, contributing to postgraduate education and research.
Mr. Nunoo-Mensah is the founder and Program Director of the Dilemmas and Debates in Colorectal Surgery Conference at King’s College London. He is the immediate past president of the International Society of University Colon and Rectal Surgeons (2022-2024). His contributions include extensive publications in leading surgical journals, authorship of key surgical textbook chapters, and presentations at global conferences.
A passionate educator, he has trained surgical residents and fellows in the UK and internationally, including as a clinical instructor at the University of Southern California and as a lead trainer for the UK’s National Laparoscopic Colorectal Surgery Training Programme.
Residing in London with his wife, Mr. Nunoo-Mensah enjoys traveling, playing touch rugby, and advancing the field of colorectal surgery through clinical practice, research, and education.
Mr Joseph Nunoo-Mensah
Consultant Colorectal & Laparoscopic Surgeon
Alison Walker
Company Director
Serena Ramzanali
PA (Cleveland Clinic London)
Tolu Salako
Educational Diector
Get inTouch
PRIVATE PATIENTS
Marsha Ming & Serena Ramzanali
PA to Mr Nunoo-Mensah
40 Grosvenor Place, London, SW1X 7AW
Tel: +44 (0) 203 423 7622
Mobile: +44 (0) 7513 712440
Email: jnunoomensmedsec@ccf.org
MEDICO-LEGAL INQUIRIES
Department of Colorectal Surgery
Hambleden Wing West- 2nd Floor
King’s College Hospital
Denmark Hill
London, SE5 9RS
Email: jnunoomensmedsec@ccf.org
NHS PATIENTS
Email: kch-tr.colorectalsecretaries@nhs.net
