Mr Oliver Warren
Consultant Colorectal and Hernia Surgeon
About Oliver Warren
Mr Oliver Warren is a Consultant Colorectal, Hernia and Robotic Surgeon and Chair of Digestive Health at Welbeck. He specialises in robotic colorectal cancer and hernia surgery, complex abdominal wall reconstruction, proctology, and diagnostic and therapeutic endoscopy.
He has a high-volume robotic practice focused on abdominal wall hernias, including inguinal, ventral, incisional, recurrent and complex hernias, with expertise in abdominal wall reconstruction, diastasis recti, postpartum abdominal wall insufficiency and parastomal hernias. His practice takes a multidisciplinary approach to abdominal wall and digestive health, integrating surgical and non-surgical care.
Mr Warren also manages the full spectrum of proctology, including haemorrhoids, anal fissures and anal fistulae, alongside a high-volume colonoscopy practice encompassing bowel cancer screening, polyp removal, investigation of bleeding and altered bowel habit, and endoscopic surveillance. He remains actively involved in colorectal cancer surgery, performing around 60 colorectal cancer resections annually and contributing to specialist colorectal cancer MDT practice.
Oliver graduated from Imperial College London in 2001 and completed his Doctorate there in 2009. He became a Fellow of the Royal College of Surgeons in 2012, receiving the ASGBI Gold Medal for performance in the FRCS examination. He undertook advanced fellowships at St Mark’s Hospital, Royal Prince Alfred Hospital, Sydney and Cleveland Clinic, Ohio, before being appointed Consultant Colorectal Surgeon at Chelsea and Westminster Hospital NHS Foundation Trust in 2015, where he remains an active NHS consultant. He served as Clinical Director of Surgery there for nine years and is an Honorary Clinical Senior Lecturer at Imperial College London.
Oliver is a Proctor for Intuitive Surgical, training surgeons across the UK and Europe in robotic surgery. He has authored more than 140 peer-reviewed publications and lectures internationally on robotic surgery, abdominal wall reconstruction, colorectal cancer surgery and surgical outcomes. He is married with two daughters, and lives in London.
Consultation fees:
Initial consultation from: £350
Follow up consultation from: £235
Expertise
- Haemorrhoids
- Fissure-in-ano
- Pilonidal Disease
- Groin Hernias
- Colorectal Cancer and Inflammatory Bowel Disease
Overview
- Age of patients seen
- 18+
- Qualifications
BSc (Hons)
MBBS (Hons.)
MD (Res.)
FRCS (Gen.Surg.)
- Languages spoken
- English
- Online profiles
- Research highlights
Oliver has published over 100 peer reviewed publications and book chapters on a diverse range of subjects including colorectal and hernia surgery, medical leadership, patient safety and surgical education.
In 2015, he published his first book entitled 'Going into Hospital? A guide for patients, carers and families' which seeks to engage patients in their care throughout the entire pathway and help patients improve their quality of care directly.
In 2008 he worked at the Department of Health as a Clinical Adviser to the Under-Secretary of State for Health.
From 2007-2014, he was the founder and clinical lead of Prepare to Lead: a prize-winning leadership development mentoring programme commissioned by NHS London.
He has held a number of advisory roles to public, private and third-sector organisations.
- Professional memberships
Association of Coloproctology of Great Britain and Ireland
European Society of Coloproctology
British Hernia Society
Association of Surgeons of Great Britain and Ireland
Consultations and services
- Self-pay available from £350
- Health insurance
- 30 mins consultation
- Self-pay available from £235
- Health insurance
- 15 mins consultation
Insurers covered
Tests & treatments
Locations
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Frequently asked questions
Yes, but only for certain services. Some consultations, assessments, and treatments can be booked directly, while others require a GP or specialist referral. Please check the relevant service page for guidance, and contact the centre if you’re unsure.
We aim to offer appointments as quickly as possible, and many services have same-day or next-day availability. Waiting times vary depending on the appointment type, specialty, and consultant availability, but our team will always offer the earliest suitable appointment.
Yes. You can arrange an appointment for a family member, or someone you care for, just let us know when you get in touch. We’ll need their details and consent to complete the booking, unless you're their legal guardian or have power of attorney.
Your first consultation includes a detailed discussion of your symptoms, medical history, and lifestyle factors, followed by a thorough examination. It’s helpful if you can bring the results of any previous investigations with you, as well as a list of your current medications. Come with a comfortably full bladder so you can provide a urine sample if requested.