Gastric Sleeve UK

Private Gastric Sleeve Surgery

Gastric Sleeve Surgery in the UK

If you are looking for private gastric sleeve surgery, Allure can help. As a CQC registered provider known for its dedication to high levels of care from start to finish, we are proud to help people turn their health – and their lives – around. Allure gastric sleeve patients also receive our aftercare package of nurse and dietetic care. 

The gastric sleeve is a powerful surgery that has been utilised by individuals across the globe to help transform their quality of life. Usually performed laparoscopically (keyhole) by our GMC registered consultant surgeons, the surgery self involves removing around 80% of the stomach for an excess weight loss of 70% on average measured over a two-year period.

Whilst the gastric sleeve is an extremely successful treatment for tackling obesity and its comorbidities, it will require you to make long-term changes regarding your diet for maximised success and health. This is why we say that gastric sleeve surgery must be thoroughly considered. It is, of course, imperative that we provide you with as much information as they necessary to make a measured and informed decision.

By choosing to go private with Allure, you avoid long NHS waiting lists and have direct access to our experienced bariatric team. As with all medical procedures, eligibility applies.

Health Benefits of Gastric Sleeve Surgery:

  • Weight Loss Expectations: You can expect to lose around up to 70% of your excess weight in the first two years after your operation.
  • Improvements in any weight-related conditions that you might have such as type 2 diabetes, heart disease, osteoarthritis, obstructive sleep apnoea, high cholesterol, and polycystic ovaries
  • You’ll be more able to do physical activity which can lead to increased energy, fitness, strength, stamina, bone density, improved mood and self-confidence.
Key information:


Length of Stay
1 night

Procedure Duration
1-4 hours


How Does a Gastric Sleeve Result in Weight Loss?


As touched, the gastric sleeve involves removing up to 80% of the stomach. This will significantly change the way you eat by limiting the amount of food that you can physically consume. Moreover, by removing 80% of your stomach we are also drastically suppressing the production of ghrelin (commonly referred to as the hunger hormone). Combined, this helps you to lose a significant amount of weight.


Your Gastric Sleeve Recovery


With Allure, you will be able to leave hospital one to two days after your gastric sleeve surgery. It is normal to feel very tired after your surgery, but you should be able to return to work as soon as one week after. Of course, this depends on your occupation. You can expect to be driving within four weeks. You should check with your doctor and insurance company first. Typically speaking, you will be able to return to normal daily activity within four to six weeks.

This does not mean you won’t continue to feel symptoms. Three to six months after your gastric sleeve surgery you may still experience aching, dry skin, fluctuations in mood, hair thinning, feeling cold, and tiredness. As a gastric sleeve patient, you should keep in mind the type of operation you have gone through to best rationalise and cope with these symptoms.


The Gastric Sleeve Aftercare Programme with Allure 


As with all medical weight loss procedures with Allure, you will be privy to a bespoke and celebrated aftercare programme that includes dietetic and nurse care. Your team will explain what is required of your whilst going through recovery. This will include pain relief, a review of medications you may already be taking for weight-related conditions, developing a carefully controlled diet, exercise plan, and blood tests.

Gastric Sleeve Lifestyle


Life after a gastric sleeve is different. You must follow a healthy diet, lifestyle, and adapt your eating habits. By maintaining this you will maximise weight loss and continue to reduce the risk of weight-related comorbidities and post-procedure complications. Our HCPC Dietitian, Chris, will help support you through this.

Post-surgery you should drink plenty of fluids. This will help you avoid dehydration and constipation. Likewise, you should chew your food thoroughly and avoid drinking and eating at the same time. This will reduce your risk of dumping syndrome. This is a collection of uncomfortable symptoms that occur when food enters the small intestine too quickly. Dumping syndrome isn’t pleasant, and includes symptoms such as nausea, vomiting, dizziness, sweating and diarrhoea. To avoid dehydration, dumping syndrome, and constipation you follow the advice of your medical team.

Gastric sleeve surgery has been noted to change the way the stomach absorbs iron as well as vitamin B12. This means that you will be required to take supplements for these daily.

You should avoid getting pregnant for the first 18 months after gastric sleeve. This is so that your weight can stabilise.

To maintain the benefits of your weight loss surgery, you’ll need regular check-ups for the rest of your life. These will become less frequent as time goes on.


What are the Potential Risks and Complications of Gastric Sleeve Surgery?


As with any surgery, there is the potential for risks and complications. Your consultant surgeon will run through these with you and explain each one in as much detail as is necessary before you proceed. These may include blood clots, infection, internal bleeding, leaking, acid reflux, nausea and vomiting, nutritional deficiencies, stomach ulcers, stricture, adhesion, deep vein thrombosis, pulmonary embolism, infertility, changes in mental health, and weight gain or recurrence of obesity-related illnesses.

Anaesthetic complications can include unexpected reaction to the anaesthetic and chest infection.

Gastric Sleeve Eligibility


  • If your body mass index (BMI) is 35 or more and you’ve been struggling to lose weight even while maintaining a healthy lifestyle, this could be an option for you.
  • If you have a BMI above 30 and have existing comorbidities, such as sleep apnoea and diabetes, you may still be eligible for gastric sleeve surgery.
  • You must be fit for surgery and general anaesthetic to be considered for gastric sleeve surgery.

Sometimes, gastric sleeve surgery is carried out before you can have gastric bypass surgery. You would need to wait for up to 18 months after your gastric sleeve surgery before being assessed for the bypass.

gastric sleeve diagram showing full stomach and then stomach post-op which is reduced by 80%

GMC Registered Consultant Bariatric Surgeons

Our GMC registered Consultants were handpicked for their experience, talent, and expertise. This helps us to ensure all Allure Patients receive the highest levels of care possible, no matter where they are. Learn more about our consultant bariatric surgeons by clicking on their image below.  

Allure Consultant Mr Brij Madhok
Mr Brijesh Madhok, Derby
Mr Javed Sultan, consultant bariatric surgeon
Mr Javed Sultan, Manchester
Mr Periyathambi Jambulingam
Mr Periyathambi Jambulingam, London

Learn More About the Gastric Sleeve with Allure

Gastric Sleeve Clinics

Like every aspect of Allure, our independently registered facilities were dutifully selected for their ability to meet our high standards and the needs of our gastric sleeve patients. Learn more about each facility by clicking on the image below. 

Spire Bushey Bariatric Surgery and Orbera 12 Month Gastric Balloon Clinic


Heathbourne Road, Bushey
WD23 1RD

Entrance to Derby private health clinic. Light green wall, sign, and two plants.


Uttoxeter New Road
Derby, DE22 3NE

bariatric surgery in manchester, oaklands hospital


19 Lancaster Rd
Salford, M6 8AQ

Is the Gastric Sleeve Right for Me?

A gastric sleeve seeks to reduce the chances of several life-threatening weight-related health problems, including heart disease, high blood pressure, cancer, type 2 diabetes, and obstructive sleep apnea. This could be an option for you if you have been struggling with obesity for a while and haven’t been able to lose weight through traditional methods. This procedure is generally not advised for those with conditions such as acid reflux, Barrett’s oesophagus or oesophageal dysmotility.

Calculate Your BMI

In order to have gastric sleeve surgery you need a BMI of at least 35. You can use our Calculator in order to determine your BMI, or use the NHS BMI Calculator.

How is body mass index (BMI) measured? 

An individuals BMI is calculated by using the following formula: 

BMI = Weight (kg) / Height (m)²

You must take your weight in kilograms, divide it by your height in meters, and then divide it a second time by your height in order to determine the correct body mass index. 

Not sure you qualify?

If you still aren’t sure, a member of our team will be able to help. If you are certain you won’t qualify for gastric sleeve surgery, you still may be eligible for other medical weight loss treatments. 

Did You Know?

The gastric sleeve was first introduced in 1988 in order to treat obesity, and originally functioned as the first of a two-step procedure that included the gastric bypass. Due to the success of the initial procedure, however, the sleeve gastrectomy has been offered as a stand-alone bariatric procedure since 2003.  

BMI Calculator
Use this Calculator to Check Your Body Mass Index (BMI).
Please enter a value between 125 and 225.
Please enter a value between 10.0 and 500.0 ( one decimal )
Calculate BMI
Use this calculator to check your body mass index (BMI), which can be useful in determining your eligibility for treatment.

Gastric Sleeve FAQs

How Do I Qualify for Gastric Sleeve Surgery?

  • You must have a BMI of at least 35.  Additionally, you’ll need to be fit for surgery and general anaesthetic.

What Can  I Eat After my Gastric Sleeve Surgery?

  • You won’t be able to eat after your procedure until you’ve passed the normal swallowing test. Then you’ll be allowed to eat some soft foods before a healthy balanced diet. Our dietitians will support you through this.

What is the Average Weight Loss with a Gastric Sleeve?

  • On average, people lose 70% of their excess weight from gastric sleeve surgery in the first two years.

Can I Lose More Weight With a Sleeve or Bypass?

  • After gastric sleeve surgery, your stomach will be reduced from 1500ml to 200ml. A gastric bypass procedure reduces the size of the stomach to 30ml. Because of this, however, in either case how much weight you lose is ultimately down to how you change your lifestyle after your surgery.

Is a Gastric Sleeve Permanent?

  • Gastric sleeve surgery is generally non-reversible. However, if you do not adopt a permanent healthy lifestyle after the procedure, there is a risk of you reversing your weight loss.

What Happens if I Eat Food too Soon?

  • Eating solid foods too soon after your gastric sleeve surgery can create pressure on your stomach pouch and stretch it, this may lead to vomiting and discomfort. To avoid this, you should follow the advice that will be given to you by your dietitian, Chris.

Can I Drink Alcohol?

  • You can drink alcohol after your procedure but the rate at which it is absorbed may have changed. Remember, you will need to adopt a healthy lifestyle after your procedure to successfully lose weight, so keep this into consideration when drinking alcohol. We do not advise drinking alcohol.

Can I Regain Weight?

  • Yes, but should you follow advice from the dietitian and continue to exercise then this should not happen.

How Long Will I be in Hospital?

  • You may be in hospital for up to two nights following your surgery.
How Much Does a Gastric Sleeve Cost?
  •  Speak to a patient advisor today in order to discuss gastric sleeve cost and receive your free quote. 
Can I Smoke?
  • Gastric sleeve patients must stop smoking 6 weeks before their surgery without fail. 

Ask About Gastric Sleeve Cost, Consultations, and More

If you are interested in a private gastric sleeve with Allure, get in touch with the medical weight loss specialists at Allure Weight Loss today. Call 0345 512 0094, email info@allureweightloss.com or fill out our online enquiry form below. This way we will be able to discuss the gastric sleeve cost, eligibility, and more with you in detail.