"From the first call to my final follow-up, the team made me feel completely safe. I only wish I'd done it sooner."
Sarah J.
Google
Now accepting new patient assessments
Discuss your options for weight loss surgery
Discover whether weight-loss surgery may be suitable for you, explore your treatment options and take the first step towards expert advice.
- 4,500+ procedures performed
- One of London's leading bariatric surgeons
- Specialising in Gastric Sleeve, Gastric Bypass & Mini Gastric Bypass
- Full pre and post-surgery support
- Rated excellent by patients
- Based at 9 Harley Street, London
Rated excellent
9 Harley Street
London, W1
Free Eligibility Assessment
A clearer picture in 60 seconds
Confidential. No obligation. Reviewed by our clinical team.
Step 1 of 7 Confidential
This assessment is for guidance only and does not replace a medical consultation. Suitability for surgery must be confirmed by a qualified specialist.
Real Patient Results
Lives changed, safely
Before-and-after photographs and stories shared by patients with their consent.
"I have my life back. Energy, confidence — everything."
"Down 6 stone and off all my blood pressure medication."
"The aftercare made the difference. I never felt alone."
"I can keep up with my grandchildren again."
Google Reviews
Trusted by hundreds of patients
5.0 from verified Google reviews
"Dr Alhamdani took the time to explain every option. The surgery itself was smooth and the aftercare has been excellent."
Mark T.
Google
"A supportive, professional team from start to finish. I've regained energy I didn't think was possible."
Priya K.
Google
Meet Dr Alhamdani
Surgical Expertise You Can Trust
Choosing weight-loss surgery is a significant decision, and choosing the right surgeon is just as important.
With over 4,500 bariatric procedures performed, Mr Ali Alhamdani is one of the UK's leading Consultant Bariatric and Upper GI Surgeons. From your first consultation through to long-term aftercare, you'll receive expert, compassionate care tailored to your individual goals.
9 Harley StreetPrivate consultations in London's renowned medical district.
Areas of Expertise
Dr Alhamdani specialises in the diagnosis and surgical treatment of obesity and upper gastrointestinal conditions.
Qualifications & Recognition
A recognised leader in bariatric surgery
- FRCS, Royal College of Surgeons (2010)
- Consultant Bariatric & Upper GI Surgeon since 2010
- Head of an International Bariatric Multidisciplinary Team
- Author of the UK book Weight Loss Surgery (3rd Edition)
- One of only nine surgeons worldwide offering an International Bariatric Fellowship in affiliation with the University of Oxford
- Published more than 300 scientific papers and presentations
Where You'll Be Seen
Consultations and procedures across leading private hospitals
- BUPA Cromwell Hospital
- Spire Bushey Hospital
- The Whittington Hospital (UCLH)
Why Patients Choose Dr Alhamdani
Patients choose Dr Alhamdani because they want more than an operation. They want clear advice, an experienced surgeon and ongoing support throughout their weight-loss journey. Whether you're exploring surgery for the first time or considering revision surgery, you'll receive honest guidance, evidence-based recommendations and personalised care at every stage.
4,500+ Bariatric Procedures
Consultant Since 2010
International Bariatric Educator
300+ Scientific Publications
Comprehensive Aftercare
Your Consultation, Your Choice
Getting expert advice is easy
Choose the consultation option that suits you best.
In Clinic
Meet Dr Alhamdani in person at his Harley Street clinic for a face-to-face consultation and personalised treatment plan.
Video Consultation
Speak with Dr Alhamdani securely from the comfort of your own home. Perfect if you live outside London or prefer a remote appointment.
Telephone Consultation
If you'd rather speak over the phone first, we're happy to arrange an initial consultation to answer your questions and discuss your options.
Procedures
Which weight-loss procedure is right for you?
Every patient's journey is different. During your consultation, Dr Alhamdani will help determine which procedure is most appropriate based on your health, weight-loss goals and medical history.
Gastric Sleeve
The gastric sleeve reduces the size of the stomach, helping you feel full sooner and eat smaller portions. It is one of the most commonly performed weight-loss procedures and offers excellent long-term results for many patients.
May be suitable if:
- You're looking for significant weight loss
- You want to reduce hunger
- You prefer a procedure without intestinal bypass
Gastric Bypass
A gastric bypass creates a smaller stomach and reroutes part of the digestive system. This limits food intake and reduces calorie absorption, making it an effective option for many patients.
May be suitable if:
- You have a higher BMI
- You suffer with reflux
- You have obesity-related health conditions
Mini Gastric Bypass
A mini gastric bypass is a simpler variation of the traditional gastric bypass using a single connection. It can provide excellent weight loss while reducing operating time.
May be suitable if:
- You're seeking significant weight loss
- You're considering an alternative to a traditional bypass
- You'd like to discuss the differences with a specialist
Not sure which procedure is right for you?
You don't need to decide before getting in touch. Book a free consultation and Dr Alhamdani will explain the advantages, considerations and expected outcomes of each procedure to help you make an informed decision.
Have questions before taking the assessment?
Speak to our team confidentially and without obligation.
We're here to help, with no pressure or obligation.
What would you like to do next?
Choose the type of information or support you would like from our team.
Your information is secure and will only be used by our team.
Procedures & Pricing
Clear, inclusive pricing
All-inclusive packages with no hidden costs. Every procedure includes dedicated aftercare and direct access to your surgeon.
Pricing is indicative and may vary based on individual clinical needs, hospital choice and any additional investigations required. A personalised quote will be provided after consultation.
Why Patients Choose Dr Alhamdani
A practice built on careful, considered care
4,500+ procedures
A depth of experience across the full range of bariatric techniques.
Trusted bariatric surgeon
Consultant-led care from a recognised specialist on Harley Street.
Personalised assessment
Every plan is built around your health, goals and circumstances.
Transparent planning
Clear timelines, costs and expectations — never any pressure.
Multidisciplinary team
Surgeons, dietitians, nurses and psychologists working together.
Pre & post-surgery support
Structured follow-up to protect your results for the long term.
Why Timing Matters
Acting earlier protects more options
Weight loss surgery can be most effective before obesity-related complications become more serious. Acting earlier can improve safety, recovery, and long-term health outcomes.
Acted early
Best outcomes
Improved diabetes, blood pressure, sleep and mobility. A safer procedure and a faster return to everyday life.
Waited too long
Fewer options
Surgery may become less safe or no longer suitable if health complications progress.
Frequently Asked Questions