Weight loss surgery in London

We work at several locations in London including on Harley Street, at the heart of London’s prestigious medical district

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    Healthier Weight at the heart of London's medical district

    We’re proud to work with some of the world’s best bariatric specialists in the centre of London’s prestigious medical district. It’s here on Harley Street that we work with the godfather of gastric banding Prof Franco Favretti. To be at the forefront of medical advancement, or to be more accurate to lead medical advancement in the field of weight loss surgery, we must have our finger on the pulse of research and development, and there are few better places to do that than in London.

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      Procedures available in London

      Below you can find the procedures that are available in the London area, as well as a brief overview of what each of them entail.

      Gastric Band

      The gastric band is the safest weight loss procedure, and for many it’s also the best. With a track record stretching back 25 years, it’s proven to be safe and effective. Our team has done over 20,000 band procedures and it’s an option everyone contemplating weight loss surgery should consider.

      Gastric Sleeve

      The Gastric sleeve (also known as the laparoscopic sleeve gastrectomy) is the world’s fastest growing weight loss procedure. It has grown rapidly in popularity in recent years and now accounts for more procedures in the NHS than the gastric band or gastric bypass.

      Gastric Bypass

      The gastric bypass is a long established weight loss procedure. Over 30 years it has proven to be safe and effective, delivering both excellent weight loss outcomes and significant health benefits. For people experiencing weight related health problems, the bypass is usually the best procedure.


      Healthier Weight were the first to perform the latest in weight loss techniques, the Endoscopic Sleeve Gastroplasty also known as the non-surgical sleeve. The ESG involves suturing the stomach from the inside to significantly reduce its capacity by up to 80%.

      "Before surgery I felt like I was constantly judged"

      Martine’s gastric sleeve was life changing. After losing an incredible 16 stone she can now indulge in her life’s passions, particularly horse riding which she was unable to do while overweight.

      Weight loss consultants in London

      Mr John Loy

      Mr John Loy


      Mr Loy is a new member of the Healthier Weight surgical team and an experienced Consultant Upper GI and Bariatric Surgeon. He has been trained to Royal College of Surgeon’s Fellowship level in Bariatric Surgery and spent a year in the world renowned NYU Langone Medical Centre with Professors George and Christine Fielding. He operates a busy full-time NHS weight loss surgery practice, receiving tertiary referrals for primary and complex revisional surgery.

      Services and procedures offered

      Gastric bandGastric bypassGastric sleeve

      Timeline and qualifications

      • Completed medical school and basic surgical training in Belfast in 2002
      • Higher surgical training in Severn Deanery, specialising in upper GI and bariatric surgery
      • Expert laparoscopic bariatric training in Bristol, Gloucester, Truro and Taunton as a specialist registrar 
      • Consolidated training through a Royal College of Surgeons fellowship in the Southwest Bariatric Surgery Centre of Excellence in Taunton
      • Recently spent a year in New York with Professors George and Christine Fielding at the internationally renowned NYU Langone Bariatric Surgery Unit – one of the busiest bariatric units in the world

      Prof Franco Favretti


      As one of the most experienced obesity surgeons in the world, widely considered as the father of gastric banding, we are highly privileged that Professor Favretti has chosen to work exclusively for Healthier Weight in the UK. As a result of his unparalleled expertise and experience, Healthier Weight patients benefit from the best possible surgical outcomes and weight loss success.

      Services and procedures offered

      Gastric bandSILS

      Timeline and qualifications

      • Graduated from University of Padua, Italy
      • Qualified as a general surgeon and thoracic surgeon. Performed laparoscopic surgery as early as 1991 and obesity (bariatric) surgery as early as 1983
      • Worked with Dr Kuzmak to turn his concept of an adjustable gastric band into reality, culminating in the first implantation of the first LAP-BAND by Belachew in 1993 
      • Performed the second ever gastric band implantation just one week later
      • Developed the surgical technique for the laparoscopic gastric band used by most surgeons worldwide today 
      • Pioneered new procedures such as SILS. In 2009 for Healthier Weight, he was the first to implant a gastric band by single incision rather than the standard 4 or 5 incisions. Implanting the band through the belly button means our patients benefit from a gastric band procedure which leaves no visible scars
      • Performed international workshops where over 120 surgeons worldwide were given “hands-on” training on the laparotomic and laparoscopic application of LAP-BAND
      • Published more than 150 medical articles in world journals including the British Journal of Surgery, Surgical Endoscopy, Obesity Surgery, Journal de Coelio-Chirurgie, Surgical Laparoscopy & Endoscopy, International Surgery, Hepato-Gastroenterology
      gastric sleeve surgery

      Mr Periyathambi Jambulingam

      qualifications: MBBS, MS, FRCS Ed, FRCS (Gen Surg)

      Mr Jambulingam qualified in 1991 and completed his higher surgical training in the West Midlands, including his certificate of completion of specialist training (CCST) at the Queen Elizabeth Hospital, Birmingham. Now with extensive bariatric surgery training and experience, Mr Jambulingam has been the Consultant General Surgeon (with special interest in upper GI/laparoscopic surgery) at Luton and Dunstable Hospital NHS Trust since 2007.

      Services and procedures offered

      Gastric bandGastric sleeveGastric bypassGastric balloonRevision surgery

      Current positions and memberships

      • Consultant GI / Laparoscopic & Bariatric Surgeon at the Luton and Dunstable Hospital NHS Foundation Trust 
      • Member of the British Obesity & Metabolic Surgical Society (BOMSS)
      • Member of International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO)
      • Member of British Obesity Surgery Patient Association (BOSPA)
      • Association of Surgeons of India (AUGIS)
      • Faculty of Surgical Trainers (Royal College of Surgeons, Edinburgh)
      Mr Douglas Whitelaw

      Mr Douglas Whitelaw

      qualifications: MBChB, FRCS (Gen Surg)

      Mr Whitelaw operates out of Watford where he is a consultant general surgeon for the NHS Luton and Dunstable University Hospital. He specialises in gastric band, balloon, bypass and sleeve.

      Services and procedures offered

      Gastric bandGastric sleeveGastric bypassGastric balloon

      Timeline and qualifications

      • Graduated in 1990
      • Completed Higher Surgical Training in the north west Thames region with specialist training at the Chelsea & Westminster, Middlesex, Hammersmith & Royal Marsden Hospitals

      "I am in my family now, whereas I was just on the sidelines before"

      Just 1 year after her gastric sleeve surgery, Sarah has lost 7 stone. “Now, after dinner we’ll walk up the park as a family. I fit in a swing! We have races to see who can go the fastest. I am in my family now, whereas I was just on the sidelines before.”

      Meet your London aftercare team


      Jo Whitehouse

      Specialist Bariatric Nurse

      Jo joined Healthier Weight in 2014 having qualified in 1996 at the University of Wolverhampton gaining a Diploma of Higher Education in Nursing Studies.

      Jo has gained almost 21 years’ experience in caring for surgical patients within a wide range of specialities both in the private and National Health sectors. Jo has been specialising in bariatric surgery since 2011.

      Yasmin Sarfraz

      Specialist Bariatric Nurse

      Yasmin joined Healthier Weight in 2011 having qualified in 2010. Yasmin qualified at Birmingham City University gaining distinction in the Adult Nursing Diploma.

      Throughout her nursing career, Yasmin has gained experience in many areas of speciality, including intensive care, cardiac medicine and military trauma. Yasmin has been specialising in bariatric surgery since 2011.

      Our locations in London

      Harley Street Clinic in London

      10 Harley Street

      10 Harley Street, London, W1G 9PF

      In the heart of London’s medical district, our prestigious Harley Street clinic offers a very high standard of patient care for Healthier Weight patients. Consultations will be carried out by world renowned surgeon Franco Favretti and Mr James Smellie.

      Parking: Short term meter parking on street. 15% discount available from reception for car park on Cavendish Square.

      Directions: Click here

      The Wellbeck Hospital

      Welbeck Hospital

      27 Welbeck Street, Marylebone, London W1G 8EN

      Professor Franco Favretti operates out of The London Welbeck Hospital, at the centre of London’s medical district. Nearest stations include Bond Street / Marylebone, Euston and Kings Cross.

      Parking: Short term meter parking on street. Nearest car park on Cavendish Square.

      Directions: Click here

      BMI Independent Hospital in London

      BMI London Independent Hospital

      1 Beaumont Square, Stepney Green, London E1 4NL

      Mr John Loy is our specialist at BMI London Independent Hospital in central London. Consultations and a range of weight loss procedures are available at this location.

      Parking: Pay and Display opposite hospital.

      Directions: Click here

      Spire Bushy Hospital

      Spire Bushey Hospital

      Bushey, Watford, Hertfordshire, WD23 1RD

      Just over 5 miles away from Watford city centre and with easy access of the M1 and M25 motorways. The Spire Bushey Hospital in Watfordoffers a convenient location on the outskirts of London. 

      Parking: FREE parking on site

      Directions: Click here

      Get a FREE consultation by calling
      0800 3134618 
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