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Gastric Sleeve Surgery

We’re the UK’s most trusted weight loss & cosmetic surgery provider

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If you have been unable to lose weight through diet and exercise alone, gastric sleeve surgery could help you achieve your weight loss goals. Also known as sleeve gastrectomy, gastric sleeve surgery may be suitable if you have a BMI of over 30, especially  if you have Type 2 diabetes, or if you suffer from another condition associated with obesity.  

Gastric sleeve surgery can result in considerable weight loss, giving you a healthier, more fulfilling lifestyle. Less invasive than a gastric bypass but more complex than a gastric band, gastric sleeve patients lose on average 55-60% of excess weight after three years, according to the 2014 National Bariatric Surgery Registry Report.

The procedure involves reducing the size and capacity of the stomach by around 75%, which includes removing the upper part of the stomach where ghrelin (the hormone that stimulates hunger) is produced. This helps to reduce appetite and portion size, significantly assisting your weight loss efforts.

If you are thinking about gastric sleeve surgery, contact us today to arrange a consultation with one of our experts, who will help you decide on the best way to begin the next chapter in your weight loss journey.

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Why choose The Hospital Group for gastric sleeve surgery?

For many years, The Hospital Group has been committed to helping people be the best they can be. We’re the UK’s longest established and most trusted weight loss and cosmetic surgery provider group. We pride ourselves in providing surgical excellence and long-term support to help our patients achieve their weight loss goals.

· Expertise you can trust: we are committed to providing very high standards and surgical excellence across all weight loss surgeries we offer

· Supporting you every step of your journey: with our dedicated medical staff, experienced dietitians and devoted weight loss support team and Patient Advisors, you can rest assuredwe are with you whenever you need us

· Free aftercare: we offer 2 years of free aftercare and up to 6 months of surgical cover to all our gastric sleeve patients

· Dedicated weight loss support team: our dedicated weight loss support team can help with booking appointments, support, practical ideas and solutions to help you achieve your weight loss goals

What is gastric sleeve surgery, and how does it differ from a band or bypass?

Although the purpose of all three weight loss surgery procedures we offer is to reduce appetite and portion size to ultimately help with weight loss, there are some key difference between these procedures.

The sleeve gastrectomy procedure is normally done as key hole surgery and involves vertical removal of most of your stomach. This then helps to control food intake. Similarly, to bypass surgery, gastric sleeve surgery is irreversible. The vertical sleeve gastrectomy is sometimes recommended over other forms of bariatric surgery if a medical condition would rule out the other forms of surgery.

Gastric sleeve surgery is also a little less invasive than gastric bypass, during which the top of the stomach is stapled, creating a small pouch that is then connected to the small intestine. Because the pouch is smaller, and the rest of the stomach is bypassed, you will feel full after eating less. Hormones that stimulate satisfaction increase and hormones that stimulate hunger decrease.

Finally, gastric band is less invasive than gastric sleeve or bypass surgery. A band is placed around the top of the stomach, which stimulates nerve endings tricking the brain into thinking the stomach is full.  This helps you to feel satisfied on smaller portions.

Whether you are considering sleeve, bypass or band surgery, we always advise to book a free consultation with one of our Patient Advisor first to discuss your weight loss surgery options.

The main purpose of gastric sleeve, band, and gastric bypass surgeries is reduce appetite and portion size. The way this is done depends on the kind of surgery:

Gastric sleeve

How does it work?

The upper part of the stomach is removed, reducing the capacity of the stomach by around 75%, along with the area of the stomach where ghrelin (the chemical that stimulates appetite) is produced. Your portion size and appetite are therefore reduced.

Is it reversible? 


Gastric bypass

How does it work?

More invasive than gastric sleeve surgery. The top of the stomach is stapled, creating a small pouch that is then connected to your small intestine. Because the pouch is smaller and the rest of your stomach is bypassed, you will feel full after eating less, your overall appetite will reduce and you may absorb fewer calories from your food.

Is it reversible? 


Gastric band

How does it work?

Less invasive than gastric sleeve surgery. A band is placed around the top of the stomach, which Stimulates nerve endings, tricking your brain into thinking the stomach is full.  You feel more satisfied on smaller portions of food.

Is it reversible? 


What gastric sleeve packages do we offer?

Gastric sleeve surgery is a fantastic weight loss tool which combined with changing your eating habits and committing to regular exercise, you will be best placed to achieve your weight loss goals. We offer various level of support depending on your individual needs through different packages – prime, plus and premium.


Although each package offers different aftercare length, all our packages share common benefits:

  • · Your anaesthetist, hospital and surgeon fees
  • · Expert dietary advice from our specialists
  • · Regular guidance from our dedicated nurses
  • · Surgical cover for your package length
  • · 24-hour emergency phone number
  • · Option of private transport to and from surgery

If you are unsure which package to choose, our Patient Advisors will help you to make the right choice. Here is what else we offer as part of our gastric sleeve packages:

Gastric sleeve prime package

· 13 dietitian appointments

· 1-year surgical cover

Gastric sleeve plus package

· 19 dietitian appointments

· 2-year surgical cover

Gastric sleeve premium package

· 28 dietitian appointments

· 6-year surgical cover

What are the benefits of gastric sleeve surgery?

Gastric sleeve surgery can completely transform your health and your overall quality of life, making every single day feel like a new and exciting opportunity to enjoy doing the things you love. Some of the benefits of gastric sleeve surgery include:

· Achieve quicker weight loss results than with gastric band surgery.
· Most people are successful in accomplishing significant weight loss – as much as 55-60% after three years*.
· Can help treat and reduce the impact of illnesses and medical conditions associated with obesity, such as diabetes and high blood pressure.
· Improve your overall confidence and self-image.
· Enjoy higher energy levels and more freedom in the things you can do.

* Source: National Bariatric Surgery Registry Report 2014

Gastric sleeve results

Your gastric sleeve surgeon, nurses and dietitians are here to understand your weight loss goals and help you achieve them. See for yourself the results that other patients have achieved and the difference it’s made for them.

What are the risks of gastric sleeve surgery?

As with any major operation, gastric sleeve surgery comes with its own set of risks. When you come speak to our experts, we will talk you through everything you need to know and answer any questions you may have to ensure you’re fully aware of the potential complications that could arise.

Our team of surgeons have plenty of experience performing weight loss surgery and supporting patients afterwards, and so you can have complete confidence that we will conduct your surgery and aftercare with the utmost professionalism.

Still, it’s important to make yourself aware of the complications, to ensure that in the unlikely event that something does happen, you are able to seek treatment as soon as possible. These may include:

  • · Blood clots
  • · Wound infection
  • · Stomach leak
  • · Stomach obstruction
  • · Malnutrition
  • · Gallstones
  • · Skin folds or excess skin

If you notice sudden swelling and inflammation or feel feverish or sick after your surgery, seek medical treatment as soon as you can.

Some people experiencing a phonemenon known as Dumping Syndrome after a sleeve gastrectomy. This is the name given to a range of symptoms experienced after consuming food/fluid containing a lot of carbohydrate (especially sugar).  It occurs because the stomach empties more quickly after gastric sleeve surgery compared with before.

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How long does gastric sleeve surgery take?

The gastric sleeve procedure itself will only take a few hours, but you’ll need to remain in hospital for two to three nights afterwards, so we can monitor your recovery.

The overall recovery time after a gastric sleeve procedure will vary based on the patient and their individual circumstances. Many people feel comfortable walking a day or two after the surgery and can return to work within a few weeks.

Gastric sleeve surgery frequently asked questions

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When you’re deciding whether to have surgery, it’s reassuring to have all the facts. You’ll be able to ask any questions at your consultation, but here are some that our patients most frequently ask.

Gastric sleeve FAQ's

The gastric sleeve is more invasive than a gastric band, but not such a major operation as a gastric bypass. Itmay therefore suit patients for whom the bypass is inadvisable due to health complications.Usually,patients most suitable to have gastric sleeve surgery are those with a BMI of 40kg/m2 or over, although if your BMI is between 30kg/m2 and 40kg/m2, you may be considered, especially if you have obesity-related conditions such as Type 2 diabetes and even more so if you are from an Asian background (source: National Institute for Health and Care Excellence (NICE) guideline 189, 2014). However, surgery is dependent on a bariatric surgeon’s opinion and your individual circumstances. All our weight-loss surgery patients have an in-depth consultation prior to surgery to discuss the most suitable procedure for them.

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You will normally stay in hospital for 2-3 nights after your surgery.

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The sleeve works to reduce portion sizes, not specific food types. Compared to the bypass, there are fewer restrictions on the types of food that patients can consume. However, some patients may struggle with certain textures of food such as bread or red meat.

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We advise you avoid alcohol for the first 4 weeks and following this, be mindful that your tolerance is likely to reduce. After your surgery, it is likely you will absorb alcohol into your bloodstream more quickly than before the operation.

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Dumping syndrome or rapid gastric emptying is relatively common following bariatric surgery procedures that bypass the majority of the stomach. It describes the symptoms that occur when food moves too quickly through the stomach and “dumped” into the small intestine. However, only 1% of patients report their symptoms difficult to manage, and often occurs less as time passes.

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More details on gastric sleeve surgery

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At The Hospital Group, we’re here to look after you. As UK market leaders in weight loss management, we offer advice you can trust, treatment based on your individual needs, and support throughout your journey with us. Here’s a step-by-step guide to what you can expect.

Gastric sleeve details

We want you to make a fully informed decision before you go ahead with surgery, so we offer a private consultation at your local clinic free of charge. At your consultation, you’ll meet with a bariatric surgeon to discuss the weight loss options available and whether gastric sleeve surgery is the most suitable procedure for your needs. You’ll be able to ask questions about all aspects of the surgery, from aftercare and dietary changes to the results you can expect. You’ll also meet your patient care coordinator, who will be with you every step of the journey. They will give you a personal quotation of costs and information about finance options, the expected timescale, our surgical facilities and door-to-door transport services.

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At your consultation, you can book your surgery if you feel ready, but there’s no obligation to go ahead.Bariatric surgery is a big step and you may want to take time to do more research and think about your decision. We’ll give you a patient information booklet, which provides comprehensive information on your weight loss procedure, aftercare and dietary guidelines. This is an important resource and we require patients to read the detailed information it contains. You’ll also find lots of helpful information here on our website – you can read about our surgeons’ qualifications, THG’s weight loss management expertise and inspiring stories from some of our patients. Our patient care coordinators are available to discuss any concerns you may have. And when you feel ready, they can book you in for your procedure. We also have a 14-day ‘cooling off’ period in place, which means that if you change your mind about the procedure after booking within that period, you will not be charged.

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On the day of your surgery, your medical team will make your experience as comfortable as possible and you’ll meet your surgeon again before the procedure. The gastric sleeve procedure is usually carried out as keyhole surgery. It involves vertical removal of up to 75% of the stomach area to leave a thin sleeve. The stomach continues to function as normal, but the smaller sizerestricts the amount you can eat and makes you feel full after smaller meals. It also aims to drop appetite hormone levels to reduce your appetite. Less stomach acid is produced, which can affect the absorption of some vitamins and minerals and so supplements are required for life. Gastric sleeve surgery is non-reversible.

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We’ll be here throughout the recovery process to help you recuperate quickly.For gastric sleeve surgery you’ll need to stay in the hospital where your surgery has taken place for 2-3 nights. Each patient is given a personalised care plan, developed on the advice of their surgeon. All THG hospitals are equipped to the highest standards of clinical care and patient comfort.

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When you have a gastric sleeve, the surgery is only the start of your journey. At THG, we offer a full package of aftercare support to help you achieve your weight loss goals. You’ll benefit from the following aftercare for 2 years: Access to a dedicated weight loss support team who can help with booking appointments, emotional support, practical ideas and solutions Specialist support from a bariatric surgeon, dietitians and nurses Surgical cover for 6 months 24-hour emergency telephone helpline.

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