Mr Oliver Warren was awarded the iWantGreatCare certificate of excellence in 2025 for delivering outstanding care.

 

Reviews

 
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Written by a private patient at The Lister Hospital
3rd February 2026


I would highly recommend Mr Warren. He made me feel listened to and took the time to explain the procedure in detail and answer any questions I had. I found Mr Warren to be very knowledgeable and caring particularly in the way he provided firm but kind reassurance when I felt anxious. He offered exceptional care and the whole process was a very positive experience.

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Written by a private patient at The Lister Hospital
30th January 2026


Mr Warren made me feel very confident from the first moments of our initial meeting until ultimately discharge. He was very clear in all his communication as he diagnosed the issues, explained the proposed surgical solutions and recovery plan. At every stage he answered my questions fully and clearly, and was empathetic but also a firm hand in steering my treatment in the right direction. Wholeheartedly recommended!!

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Written by a private patient at The Lister Hospital
30th January 2026


Dr Warren was amazing to deal with - super professional reassuring and understanding Would recommend

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Written by a private patient at The London Clinic
10th January 2026


I received faultless care from Mr. Warren and couldn't recommend him more highly.

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Written by a private patient at The Lister Hospital
9th January 2026


I found Mr Warren to be both very professional and empathic. He gave me clear and concise explanations with regard to my diagnosis and treatment options. I felt that he conveyed good clinical understanding of my condition and he also understood my concerns and apprehensions about the surgical procedure in relation to my other pre-existing conditions. It was very refreshing to engage with a professional who took the whole context into consideration. I enjoyed his energy and bedside manner.

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Profile

Oliver is a Consultant Colorectal, Intestinal and Hernia Surgeon at Chelsea and Westminster Hospital, The London Clinic and The Lister Hospital. He has a high-volume practice in coloproctology and is a JAG accredited colonoscopist. He has an interest in hernias, including complex abdominal wall reconstruction. He performs over 50 colorectal resections per year, the vast majority using 'keyhole' surgery.

Prior to becoming a consultant surgeon he undertook colorectal surgery fellowships at St. Mark's Hospital, London and the Royal Prince Alfred Hospital, Sydney. He was a visiting fellow at the Cleveland Clinic, USA.

Oliver is an Honorary Senior Lecturer at Imperial College London and has written numerous scientific papers and book chapters on medical leadership, patient safety and surgical education. He is the co-author of the book 'Going into Hospital: A guide for patients, families and carers'.