Mr Oliver Warren was awarded the iWantGreatCare certificate of excellence in 2025 for delivering outstanding care.
Reviews
Mr. Warren is a master of his speciality. It is not possible to be better. All the excellent reviews can be believed. I was a self-funding patient with a double hernia. The costs includung hospital costs were daunting but worth every penny.
I had researched what the NHS had to offer but their solution was not acceptable: operating on each hernia seperately, 3 months apart without robotic or keyhole means and rigorous checks beforehand on the grounds that the 'hospital' (which appeared to be some kind of nursing home) didn't have the equipment to deal with emergencies should they occur. I believe this plan to operate on each hernia separately is not recommended in any case.
So I am extremely thankful that I was able to receive such superb treatment from Mr. Warren.
Mr Warren immediately put me at ease during our first consultation. He identified my inguinal hernia, and advised me on a robotic repair in which he specialises. The video was amazing - I was very impressed with the relatively non-invasive keyhole approach to surgery.
On the day, Mr Warren came to see me before the procedure, and explained timings etc. The anaesthetist visited, after which I recall nothing until I woke up in my room. I rested for a few hours, and Mr Warren revisited to ensure I was OK to discharge. I took a taxi home and felt no discomfort, to the extent that I needed no pain medication. I was up and about within a couple of days, just respecting a common sense approach to recovery. The 3 small plasters fell off within a week.
Mr Warren has since given me the "all clear". I would highly recommend a TAPP approach to surgery wherever possible.
Mr Warren took the time to genuinely listen to my concerns and didn’t rush me at all, which immediately put me at ease. He was very open and honest about the potential risks involved, explaining everything clearly so I could make an informed decision. I really appreciated how he put complex information into a language I could actually understand. It’s also very clear he’s an expert in robotic surgery, his knowledge and confidence in this area came across straight away. Overall, I felt safe, well-informed, and cared for, and I wouldn’t hesitate to recommend him to others.
I recently had an excellent experience with Mr Warren. He took the time in the consultations to listen and explained everything in a clear and reassuring way. After reviewing my scans he provided helpful advice and guidance that made me feel well-informed and I trusted his advice. I would highly recommend him to anyone seeking expert care.
Dr Warren is superb, utterly competent, personable, confidence- inspiring
The gold standard!
Specialises in
- General surgery
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'.