Gastric Sleeve Clinics (Sleeve Gastrectomy)

Private Gastric Sleeve Surgery

Gastric Sleeve Surgery Providers

The gastric sleeve is a transformative procedure designed to significantly reduce the size of the stomach. Also known as the vertical sleeve gastrectomy, this procedure is available with Allure Weightloss, completed by an aftercare programme of bariatric nurses and dietitians. You can speak to a specialist now by calling 0345 512 0094 or by emailing info@allureweightloss.com. Either way, a member of our team will endeavour to get back to you as soon as possible. 

Any gastric sleeve surgery must ne thoroughly considered, and it is therefor our aim to provide prospective patients with as much information as they need in order to make a measured and informed decision about their health.

The Health Benefits of a Gastric Sleeve:


  • 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.
An Overview:


Length of Stay
1-2 nights

Procedure Duration
1-4 hours


Getting to Know the Gastric Sleeve


The gastric sleeve involves removing up to 80% of your stomach. Reducing your stomach size, limiting the amount you can eat, it also changes the levels of ghrelin (the hunger hormone) that is produced. This leaves patients feeling fuller for longer, inducing weight loss. Over a two year period, patients can expect to lose around 70% of their total body weight. 

Gastric Sleeve Recovery


You can usually leave hospital one to two days after your surgery. As you might expect, it is normal to feel very tired at first. You may be able to return to work as soon as one week after your surgery. This is entirely dependent on the type of job that you do. You can expect to be driving within four weeks, but should check with your doctor and motor insurance company first. You should feel comfortable doing most everyday activities within four to six weeks.

For three to six months afterwards, you may also get symptoms such as:

  • Aching
  • Dry skin
  • Feeling cold
  • Fluctuations in mood
  • Thinning hair
  • Tiredness

Private Gastric Sleeve Aftercare Programme

Your healthcare team will explain what you need to do during your recovery. This will include:

  • Pain relief
  • A review of any medicines you’re taking for weight-related conditions, such as diabetes or high blood pressure
  • A carefully controlled diet plan for the first four to six weeks, moving from liquids to pureed, soft then solid foods, plus advice on eating and portion sizes
  • An exercise plan to help speed up your weight loss and improve your fitness
  • Blood tests to check if you need extra vitamin and mineral supplements

Gastric Sleeve Lifestyle

It’s important to follow a healthy diet, lifestyle, and adapt your eating habits. By doing this, you will maximise weight loss and reduce the risk of weight-related comorbidities. Our HCPC Dietitian, Chris, will help you.

Drink plenty of fluids throughout the day to avoid dehydration and constipation. 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. Symptoms of dumping syndrome include nausea, vomiting, dizziness, sweating and diarrhoea.

Gastric sleeve surgery will not change how well the stomach can absorb food, but it can change the absorption of iron and vitamin B12.

You should avoid getting pregnant for the first 18 months after gastric sleeve surgery so 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 often as time goes on.

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

Most people have gastric sleeve surgery without complications, but all surgeries carry risks. Your consultant will explain them to you before you proceed in your initial consultation.

Gastric sleeve surgery complications can include:

  • Blood clots
  • Infection
  • Internal bleeding
  • Leaking
  • Acid reflux
  • Nausea and vomiting
  • Nutritional deficiencies
  • Folds of skin due to rapid weight loss
  • Stomach ulcers
  • Stricture – the connection between the stomach and intestine narrows
  • Adhesion – scar tissue forms between two or more organs, resulting in them sticking together
  • Deep vein thrombosis (DVT) and pulmonary embolism
  • Infertility
  • Changes in mental health
  • Weight gain or recurrence of obesity-related illnesses

Anaesthetic complications can include:

  • Unexpected reaction to the anaesthetic
  • Chest infection 

Am I Eligible for the Gastric Sleeve?


  • 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.

GMC Registered Bariatric Consultant 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. Learn more about our consultant bariatric surgeons by clicking on their image.  

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

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. 

bariatric surgery in manchester, oaklands hospital


Oaklands Private Hospital, 12 Lancaster Road, Salford, M6 8AQ

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

Is the Gastric Sleeve Right for Me?

A sleeve gastrectomy looks 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. 

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.

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.  

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.

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.

Ask About Gastric Sleeve Cost, Consultations, and More

If you are interested in a sleeve gastrectomy, 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.