Chanelle after her sleeve gastrectomy
Chanelle after her sleeve gastrectomy

Gastric Sleeve Surgery

The most popular weight-loss operation around the world.

Gastric sleeve surgery, also known as sleeve gastrectomy, is where 75% of the stomach is permanently removed and seam-guarded, leaving a thin tube or sleeve.

It works by reducing the amount of food you can eat and reducing your appetite.

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Premium Aftercare A Tonic Promise

No Other Provider Offers Aftercare Like Tonic

We pride ourselves in providing the most comprehensive support package around you after your procedure.

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Unlimited Dietician Support for 2 Years
Unlimited Psychotherapist Support for 2 years
Unlimited Support with Virtual Fitness Coach for 2 Years
Unlimited Bariatric Nurse Support for 2 Years
5 Years Surgeon Follow Up
The Gym Group 30-day Membership
The Tonic Tool Kit
Tonics Private Social Media Community Support
Out of Hours Support Line
Full aftercare breakdown

Benefits of Sleeve Gastrectomy

Having gastric sleeve surgery helps many people who previously struggled with weight loss to take back control and live a happier, healthier life.
A gastric sleeve has the added benefit of removing the upper part of your stomach (the part that produces the hunger hormone, ghrelin).
Without this part of your stomach, you’ll be less hungry and will feel fuller, sooner.

Benefits of gastric sleeve surgery include:

Long-term weight loss
A healthier lifestyle
Improved BMI
Increased self-confidence
Increased mobility
Less nutritional deficiencies

Gastric Sleeve Surgery – A Proven, Long-Term Approach to Weight Loss

A Reliable Starting Point for Sustainable Weight Loss

For many people, deciding to explore weight loss surgery comes after years of trying different approaches without lasting success. Diets, exercise plans and other methods can lead to short-term results, but maintaining progress often proves difficult over time.

Gastric sleeve surgery offers a more consistent and structured way forward. It is one of the most widely performed weight loss procedures in the UK, known for delivering meaningful, long-term results when supported by the right guidance. Rather than focusing on quick changes, it provides a foundation for steady, sustainable progress.
Speak to Our Team About Gastric Sleeve Surgery

If you are considering gastric sleeve surgery and would like to understand whether it is the right option for you, our team is here to help. You can talk through your situation, ask questions and explore your options in a supportive, straightforward way.

There is no pressure to proceed, just the opportunity to receive clear, personalised advice based on your individual needs. Tel: 0300 124 5520 Email: [email protected]

What Is Gastric Sleeve Surgery?

Gastric sleeve surgery, sometimes referred to as a sleeve gastrectomy, is a procedure that reduces the size of the stomach to support long-term weight loss. During the operation, around 70–80% of the stomach is removed, leaving a smaller, sleeve-shaped stomach.

How the Gastric Sleeve Procedure Works

Gastric sleeve surgery is typically performed using keyhole (laparoscopic) techniques under general anaesthetic. This involves small incisions, which can support a smoother recovery and reduce visible scarring.

Why Gastric Sleeve Surgery May Be Recommended

Gastric sleeve surgery is often recommended for patients who are looking for an effective, long-term solution that does not involve altering the digestive pathway, as is the case with more complex procedures such as gastric bypass.

Who Is Gastric Sleeve Surgery Suitable For?

Gastric sleeve surgery may be suitable for adults who have experienced long-term challenges with their weight and have not achieved lasting results through diet, exercise or other methods.

Expected Results and Long-Term Benefits

Gastric sleeve surgery can support significant weight loss over time, particularly when combined with consistent lifestyle changes and ongoing support. Progress is typically gradual, with the focus on achieving results that can be maintained in the long term.

Private Gastric Sleeve Surgery with a Structured Approach

Choosing gastric sleeve surgery privately is not only about accessing treatment, but about how well the entire process is supported from the beginning. A clear, structured approach can make a significant difference in how confident and prepared you feel at each stage.

Your Journey with Tonic

Gastric sleeve surgery is part of a wider process, and understanding how that process is structured can help you feel more confident moving forward.

Our 5-Year Aftercare Programme

Long-term success following gastric sleeve surgery depends heavily on the support you receive once the procedure is complete. Rather than treating aftercare as a separate stage, it is built into the process from the outset.

Why Patients Choose Tonic

When comparing providers, the level of support offered before and after surgery can be just as important as the procedure itself.

Recovery After Gastric Sleeve Surgery

Recovery following gastric sleeve surgery is a gradual process, and each patient’s experience will vary. Most patients spend a short period in hospital before returning home to continue their recovery.

Gastric Sleeve vs Other Weight Loss Options

Gastric sleeve surgery is one of several approaches to weight loss, and understanding how it compares to other options can help you make an informed decision.

Risks and Considerations

As with any surgical procedure, gastric sleeve surgery involves certain risks, and it is important to understand these before making a decision.

Book Your Gastric Sleeve Surgery Consultation

If you are considering gastric sleeve surgery in the UK, a consultation is the best way to explore your options and understand what the process could look like for you. This gives you the opportunity to discuss your goals, ask questions and gain a clear understanding of whether this approach is right for you. 

At Tonic Weight Loss Surgery, consultations are designed to provide straightforward, personalised guidance so you can make a confident and informed decision. If you would like to take the next step or simply learn more, the team is here to support you throughout your journey. 

5 Steps to Change Your Life

Speak to our specialists

The first step is the biggest one – get in touch with our friendly team to discuss any questions you have and book your free consultation with a bariatric surgeon. 

Tailored to you

At your consultation, you will meet directly with one of our leading specialist bariatric surgeons to discuss the best solution for you and book a date for your surgery.

In our safe hands

On the day of your surgery, you will arrive at the hospital and into the safe hands of our specialist bariatric nurses and surgery team.

Here for you

After your procedure and hospital discharge, you will return home. Our dedicated aftercare team are here for you 24/7 should you have any questions or concerns.

Take back your life

Your premium aftercare starts right away! We are there with you every step of the way to help you achieve your goals and to give you your life back! #GivingBackLives.

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Disclaimer


As with any surgical procedure, there are possible risks and complications, including bruising, pain & bleeding, infection, nausea & vomiting, oesophagitis (inflammation of the oesophagus) or gastritis (inflammation of the stomach), bowel rupture/leakage, scarring, stricture or narrowing of the sleeve so food can’t pass through, intolerance to certain foods, gastroesophageal reflux disease (GERD) with severe heartburn, dumping syndrome, internal injury to your organs during surgery and leaking from the staples, pulmonary embolism (clot to the lung), deep vein thrombosis and death. These are uncommon and we will do everything possible to prevent them from happening. One in ten patients may experience acid reflux symptoms and require PPI (anti-acid) tablets (though this would be expected to improve or resolve in most patients as the sleeve and eating habits mature over one to two years). The sleeve gastrectomy may also be associated with developing Barret’s oesophagus.

Patients may require plastic surgical procedures after weight loss has levelled off, to treat loose skin.

Patients may develop symptomatic gallstones after weight loss, which would require a laparoscopic cholecystectomy.

If you do not reach the expected weight loss after surgery, your surgeon can explain the alternative interventions or revisions available.

Please speak to your Tonic surgeon to discuss the risks in more detail and any concerns you may have.

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Chanelle Hayes’ Tonic Weight Loss Journey

“I had gastric sleeve surgery with Tonic. I’ve lost 9 stone and feel amazing! It has completely turned my life around and given me and my children a second chance to create memories and have fun together.”

Which Weight Loss Surgery is Right for You?

We offer a wide variety of weight loss surgeries; we’ll never recommend a surgery unless it’s 100% right for you.

Compare our available surgeries here:

Gastric Bypass
Gastric Bypass
Allurion Balloon
Allurion Balloon
Gastric Sleeve
Gastric Sleeve
Mini Gastric Bypass
Mini Gastric Bypass
Gastric Band Surgery
Gastric Band Surgery
Average recovery time after surgery
10-14 Days
2-3 Days
7 days
10-14 Days
5-7 Days
Surgery procedure time (in minutes)
60 mins
0 mins
60 mins
70 mins
45 mins
Estimated weight loss
60 - 70% Excess Weight Loss
20% Excess Weight Loss
70–75% of their excess weight
60 - 70% Excess Weight Loss
50 - 70% Excess Weight Loss
Tonic premium aftercare
Included
Checkmark
Included
Checkmark
Included
Checkmark
Included
Checkmark
Included
Checkmark
Scarring?
5 x Small (12mm) abdominal incisions across the middle and upper abdomen
No
5 small abdominal scars
5 x Small (12mm) abdominal incisions across the middle and upper abdomen
5 x Small (12mm) abdominal incisions across the middle and upper abdomen
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Disclaimer for all Weight Loss and Bariatric Procedures

Weight loss surgery results may vary: causes for being overweight or obese vary from person to person.

Gastric Sleeve Surgery FAQs with Bariatric Surgeon Sherif Awad

 

Learn more about gastric sleeve surgery, directly from leading bariatric surgeon, Sherif Awad.

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