0% Finance options Available...   READ MORE

Gastric Sleeve Surgery

Gastric Sleeve Surgery in London

Gastric Sleeve Surgery in London

Is there any effective and safe weight-loss surgery that anyone can opt for? Speaking about Gastric Sleeve or Sleeve Gastrectomy surgery, this is an effective weight-loss surgery that can help you to lower the size of your stomach faster. This procedure removes around 75 to 85 percent of the lateral part of the stomach. A stapling device is used during the procedure, and the remaining stomach is shaped into a sleeve or tube so that you can only consume small meals.

The total duration of the procedure can be around one to two hours. Your surgeon will work laparoscopically. That means you will only need tiny incisions. Based on the severity, the surgeon may use a general anaesthetic.

As per some studies, people may lose around 50 percent to 60 percent of their body within a year with the help of this surgery.

However, you need to keep in mind that to enjoy maximum benefits from the surgery, you will have to follow a healthy diet plan and prefer to consume meals that contain less fat. The surgery will make it a little easier for you to stick to your diet.

Unparalleled Aftercare and Support

We emphasise our commitment to delivering an exceptionally thorough postoperative support package tailored to your needs. While bariatric surgery serves as a valuable instrument for weight management, our dedicated postoperative support team collaborates with you to enhance its effectiveness throughout your weight loss journey.

Private Gastric Sleeve Clinic stands out as the provider offering Excellent Support & Aftercare service, committed to ensuring that you achieve the desired and well-earned results from your procedure.

  • 3 appointments with your surgeon in first year
  • 2 appointments with your dietitian in first year
  • Unlimited access to surgeon and dietitian for support within your hospital package of care
  • Personalised dietary care advice specific to your needs
  • Exclusive access to peer support via private Facebook group
  • Exclusive access to monthly support group meetings with bariatric team
  • Access to our social media community
  • Telephone support and advice everyday

Your Weight Loss Journey Starts Here

  • Contact Us
    Contact the team and arrange your personal appointment with lead surgeon Mr Sanjay Agrawal.
  • Your Plan
    Meet your surgeon Mr Agrawal (in person or via telephone, depending on your preference). Mr A will provide you with honest and open advice about your surgery.
  • Your Team
    Your surgeon, dietitian and nursing team will fully prepare and support you for surgery.
  • Your Care
    All of your needs will be met by our specialist care team during your stay at the hospital.
  • The New You
    Our excellent aftercare and support team are available to you at every step of your journey, working together as you discover ‘The New You’!

Every person is different and unique and we offer a service specific to your individual needs. The bariatric team works collectively with you to provide advice and support as you progress.


Laparoscopic Gastric Sleeve / Sleeve Gastrectomy Costs

* Please note that these are guide prices based on you being fit for the procedure - quotes may vary according to individual requirements and discuss this with team following your consultation.

The hospitals where Mr Agrawal works have 0% finance options to allow you to spread the operation costs completely interest-free over extended periods.

To our knowledge, these package prices were correct as on 5 th April, 2021. However, please check for up-to-date prices with the relevant hospital you are interested in for your surgery.

You need to know

You need to know

Gastric sleeve surgery is generally safe, but there are always risks when you are having an operation. You will need to discuss these risks with your doctor before deciding if the procedure is right for you.


Certain side effects can happen after gastric sleeve surgery. Side effects will usually only be temporary and they are generally mild. The most frequent effects are soreness or some slight swelling round the incisions. Some people experience discomfort after eating in the first days after the operation. This feeling should go away once you heal, as long as you don't overeat.


More serious complications can also happen when you have gastric sleeve surgery. This is when problems occur during or after the operation. Such problems are much less common than the milder side effects. Most people will not experience any serious complications from this surgery.

One potential risk of having the procedure is that you will need to be put under a general anaesthetic. Some people can have a bad reaction to the anaesthetic. Other potential complications associated with surgery include heavy bleeding and blood clots. The chance of surgical complications is low, but they are increased by conditions such as high blood pressure.

Some of the complications you may get after sleeve gastrectomy operation are listed here:

  • Infection – although antibiotics can help prevent post-surgical infections, there is still a chance that you will develop one and require further treatment

  • Damage to your organs – although the risk is low with an experienced surgeon, it is possible other organs in your abdomen could be damaged. Another procedure could be required to set it right.

  • Staple line leak – during a sleeve gastrectomy, your stomach will be sealed with surgical staples. If these start to leak while you are recovering from surgery, you may need another operation to seal your stomach.

  • Sleeve stricture – sometimes the sleeve-shaped stomach can get narrower after surgery or an ulcer may form in it. More surgery or a procedure called an endoscopy might be necessary to fix the problem.

  • Gallstones – some people get gallstones when they lose a lot of weight quickly.

  • Failure to achieve weight loss – a sleeve gastrectomy will help you to lose weight, but it doesn't guarantee you'll reach your goal. Some people don't manage to get rid of their excess weight even after surgery.

There is a chance your surgeon may need to convert your keyhole procedure to open surgery. This means making a bigger cut on your abdomen. This is only done if it's impossible to complete the operation safely using the keyhole technique.

The chance of complications during or after the procedure will vary between individuals. Your surgeon will be able to provide personalised advice on the risks of weight loss surgery. In general, about 5% of people will experience some complications when having a sleeve gastrectomy. The chance of experiencing fatal complications during surgery is 0.2%.

Surgery should only be used for weight loss after you have tried losing weight by dieting and exercising. Your doctor might also recommend trying certain medicines before considering surgery. If you are sure about bariatric surgery, you have a few alternative procedures to consider. In addition to sleeve gastrectomy, it is possible to have a stomach band fitted or to undergo a gastric bypass operation.

- During the laparoscopic sleeve gastrectomy the nerves of the stomach and pylorus are not altered, preserving the function of the stomach.

- The rest of the gastrointestinal tract anatomy is not altered, so the food ingested follows the normal course. This results in less chance of developing lack of vitamins and minerals and dumping syndrome.

- The procedure decreases significantly the hunger by removing the part of the stomach that produces the main stimulating hormones.

- Fewer clinic follow-ups than the laparoscopic stomach band, since there is no need for band size adjustments.

Mr Agrawal will help you to decide which kind of bariatric procedure is right for you. You can learn more about the available options from this comparison chart.

If you are thinking about having gastric sleeve surgery, it is important to understand what the procedure involves, what to expect during recovery, and what the risks are. Your doctor can help you to compare the risks and benefits of different kinds of weight loss surgery, but it is still your decision. You need to be sure that having the operation will help you to lose weight. The gastric sleeve procedure could help if you struggle with hunger when you are dieting, as it can lower your appetite. It will also reduce the amount that you can fit in your stomach, so it will help you to feel full after smaller meals. If you think these effects will make it easier for you to lose weight, you are prepared to undergo the procedure, and you are committed to your diet plan, then this could be an effective weight loss surgery for you.

You will normally need to stay in hospital for about two to three days after the operation. Full recovery from a sleeve gastrectomy can take two to three weeks. You will need to be very careful about the kinds of food you eat during your recovery, but once your stomach has healed you will be able to eat a normal range of foods, in moderation.

Gastric sleeve surgery is considered to be a permanent weight-loss procedure. Part of your stomach will be permanently removed during the operation. However, there is a chance that the remaining section will stretch over time. If this happens, the amount you can eat will not be restricted any more and you may start to gain weight again. Sticking to your diet and continuing to eat well after you reach your target weight can help to prevent this from happening.

Success Stories


Jane Round

Watch our valued client Cristin Casey taking about her experience having consultation from Mr Sanjay Agrawal at The London Obesity Group clinic in London.

Louise King

Watch our valued client Isobel Grayson talking about her experience having Laparoscopic Sleeve Gastrectomy by Mr Sanjay Agrawal at The London Obesity Group clinic in London.

Before / After

Before / After




Case Studies

Case studies

Book A Free Telephone Consulting

Book A Free Telephone Consulting

Please provide us with a few information or call us on 07876 618424 and a member of our friendly team will be happy to help with your request.

Clinic Locations

Clinic Locations


    Harley Street, London

    27 Harley Street, London W1G 9QP


    The London Independent Hospital

    Stepney Green, London E1 4NL


    Spire London East Hospital

    Ilford, Essex IG4 5PZ


    The Holly Hospital

    Buckhurst Hill, Essex IG9 5HX


    Rivers Hospital

    Harlow, Hertfordshire CM21 0HH


    Nuffield Health

    Brentwood Essex CM15 8EH

Visiting Hospitals

Visiting Hospitals

  • Nuffield Hospital
  • Spire London East Hospital
  • The London Independent Hospital
  • Rivers Hospital
  • The Holly