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Bariatric Surgery

Gastric Bypass | Gastric Sleeve

CQC Registered Provider

What is Bariatric Surgery?

Bariatric surgeries hold the aim of reducing patient food consumption and encouraging weight loss by removing, limiting, or bypassing part of the stomach. The treatments we provide that fall under the umbrella of bariatric surgery include the Sleeve Gastrectomy and Roux-en-Y Gastric Bypass. They are an option for those struggling with obesity and co-morbidities, having already attempted more traditional methods of weight loss. 

Alongside weight loss surgery, the patient will be supported to make the necessary dietary and lifestyle changes in order to properly maintain weight loss. This aftercare support will last up to 2 years. 

What is a Sleeve Gastrectomy?

Typically performed laparoscopically (camera guided medical instruments are inserted through multiple small incisions in the upper abdomen), a sleeve gastrectomy involves removing a large part of the stomach in order to reduce it to about 15% – 20% of its original size. The result is a tube or sleeve-like structure. As you might expect, the purpose of the gastric sleeve is to limit the food intake of the individual post-procedure, and you should expect a recovery time of several weeks, with 1 week off work.

The expected weight loss from the sleeve gastrectomy is 70% of your excess weight over a period of 2-years.

Diagram of a Sleeve Gastrectomy

What is a Roux-en-Y Bypass?

The Roux-en-Y Bypass, or bariatric bypass surgery, involves creating a small pouch out of the stomach and attaching it straight to the small intestine, removing your ability to consume as much food. This process of bypassing a large part of the stomach is permanent and will require a lifestyle change, particularly around your diet, in order to support the process. This procedure is conducted to help patients lose weight and reduce the risk of life-threatening weight-related health problems such as heart disease, high blood pressure, and high cholesterol.

The expected weight loss from the Roux-en-Y Bypass is 70% over a 2 year period. With a recovery time of 6 – 8 weeks, you will need 1 week off work.

Key Points

Gastric Bypass: 1 - 2 hours

Gastric Sleeve: 1 - 2 hours

Gastric Bypass: 1 Night

Gastric Sleeve: 1 Night

Gastric Bypass: 1 Week 

Gastric Sleeve: 1 Week

Gastric Sleeve: 6 - 8 Weeks

Gastric Bypass: 6 - 8 Weeks

Gastric Bypass: 70% of Excess

Gastric Sleeve: 70% of Excess

How to Book

The first step would be to speak with an Allure Patient Coordinator. Our team of specialists are well-equipped to help answer any questions, and it here you will arrange your initial consultation. From first contact to saying goodbye, we pride ourselves in our dedication to fantastic customer service and high-levels of satisfaction.

Smiling medical professional with blue stethoscope outside of clinic.

Bariatric Surgery Aftercare Programme

The Allure Bariatric Surgery Aftercare Programme is complete with two years of contact with your surgeon, specialist Bariatric Nurses and HCPC Registered Dietitian. This team will ensure you receive the care you need following your surgery and provide expert advice regarding recovery, including any necessary and advisable longstanding dietary changes.

Bariatric Surgery Cost

As private medical weight loss specialists, we are dedicated to providing the highest levels of care possible. For your free quote, get in touch with our friendly team of experts today.

Allure Weight Loss Offices

Speak to Our Specialists

Start your bespoke weight loss journey by speaking to our medical weight loss specialists about private bariatric surgery. Happy to help and provide preliminary advice, we look forward to hearing from you.


Our Consultants

We only work with the highest-level bariatric consultants who perform our bariatric surgeries. They are all leaders in their field, so rest assured your consultant is at the top level. These include:

Mr Jambulingam
Mr Periyathambi Jambulingam
Mr Javed Sultan
Mr Javed Sultan
Allure Consultant Dr Brijesh Madhok
Mr Brij Madhok

Frequently Asked Questions

You must have a minimum BMI of 35 or a BMI of 30 if you are Asian or Diabetic. Speak to our specialists for more information.

Bariatric surgery itself is considered one of the safest surgical procedures to perform, especially due to recent technological advancements in the field. 

Typically, patients can look to lose around 65 - 70% of excess weight in the year after surgery. 

The Allure Weightloss Bariatric Surgery Aftercare Programme is comprised of access to your consultant, bariatric nurse, and HCPC registered Dietitian for up to 2 years. 

With help from our dietitians, you will work on implementing the necessary lifestyle changes to keep it off. 

A gastric sleeve, or sleeve gastrectomy, is the process of removing up to 80% of the stomach in order to limit food consumption and reduce hunger hormones. You can find out more here

The Roux-en-Y Gastric Bypass involves creating a smaller 'pouch' from your stomach and attaching it straight to your intestines, bypassing the main body of your stomach. You can find out more here

The most widely used measurement for obesity. The BMI approximates body mass using a mathematical ratio of weight and height [(weight in kg ÷ height in meters) or (weight in pounds ÷ height in inches x 703)]. A BMI of 30 or more is regarded by most health agencies as the threshold for obesity. A BMI of 40 or more generally qualifies as morbid obesity. However, note that BMI measurements in body-builders and athletes may not be accurate determinants of obesity because the BMI does not distinguish between muscle and fat.

The most common risks associated with bariatric surgery include:

  • Chronic nausea and vomiting
  • Acid reflux
  • Inability to eat certain foods
  • Obstruction of stomach
  • Anesthesia-related risks
  • Dilation of esophagus
  • Infection