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Gastric Bypass Surgery at The Hospital Group
Weight loss surgery

Gastric Bypass Surgery

Gastric Bypass Surgery is most suitable for BMI of 40 or over or obesity related conditions. Book a free consultation and see if this could help you lose weight….

  • Free, no-obligation consultation
  • GMC-registered surgeons
  • Care Quality Commission registered
  • Comprehensive aftercare
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Gastric Bypass Surgery

Fast Facts

Surgery Time1 - 2 Hours
Time Off Work7 - 10 Days
Hospital Stay1 Night
Full RecoveryFrom 6 - 8 Weeks
ExerciseAfter 6 Weeks
Expected Weight Loss30 - 35% Of Total Body Weight
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About the surgeryWhat gastric bypass surgery involves and who it suits

WHAT IS A GASTRIC BYPASS?

Gastric bypass surgery is a procedure that can help you to achieve long term weight loss. It can be an effective solution for anyone who has tried many other methods of diet and exercise, yet still has a body mass index (BMI) of 30 (or above).

This procedure can take different forms, but one of the most popular in the UK is called a Roux-en-Y gastric bypass. The goal of each procedure is always the same - reducing the size of your stomach, which restricts how much you can eat. A gastric bypass also affects your hunger and appetite levels.

An alternative procedure to the Roux-en-Y gastric bypass is a mini loop gastric bypass. This is a newer type of bypass which works in much the same way and offers the same benefits. The key difference is that a mini gastric bypass will involve less 'rerouting' of the digestive system.

In a gastric bypass operation, your digestive system is rebuilt to change how your stomach and intestines manage your food intake. A smaller pouch is created in the top part of your stomach, which leaves a larger pouch in the lower part of your stomach that will no longer be used.

In essence, this procedure makes the stomach smaller. The smaller pouch is connected to your small intestine by a small tunnel created by your surgeon – 'bypassing' the rest of the stomach. The food you eat after a gastric bypass also misses out the first section of your small intestine.

The difference between a Roux-en-Y and a mini gastric bypass is in the number of anastomosis (or joins) between the stomach and bowel. A Roux-en-Y gastric bypass has two of these 'joins' – upper and lower. A mini bypass will have just one and misses out more of the small intestine.

In both procedures, you'll experience an increase in hormones that make you feel satisfied. At the same time, the hormones that make you feel hungry will be reduced, which will reduce your overall appetite too. As a result, a gastric bypass can help you lose weight safely and effectively over time.

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WHAT ARE THE BENEFITS OF A GASTRIC BYPASS?

Gastric bypass surgery can help you achieve your long-term weight loss goals. The third 2020 National Bariatric Surgery Register study found that, on average, a person can lose more than 70% of excess weight within one year of surgery.

If you decide to have gastric bypass surgery, you might find that substantial weight loss leads to better mobility, an increase in energy levels, and a number of improvements to your quality of life. This can include a wider choice of clothing that would've previously felt uncomfortable.

A gastric bypass may also help with a number of weight-related health issues. Type 2 diabetes and hypertension are among the conditions that are known to be improved with gastric bypass surgery. Every patient is different, but this is something we can discuss with you.

Once you start to see the results from your procedure, you might be able to live a more active lifestyle with your family and friends. And you may find everyday activities easier as your weight reduces.

Are there any risks?

There are risks involved with all surgical procedures. If you believe that gastric bypass surgery could help you, it's also important you know what the risks are before you go ahead. By doing so, you can weigh up those risks against the benefits your procedure could bring.

We want your decision to be made based on all the facts, and so we'll discuss all the potential risks of a gastric bypass during your consultation. You can also ask any questions you might have.

In some cases, gastric bypass side effects can include bleeding, infection, pain, scarring, or reflux.

Can I get a gastric bypass?

This procedure could be the answer to shedding your excess weight and living a healthier life. It's not for everyone, but you might be suitable if you suffer with obesity, have a body mass index (BMI) of 30 or over, and tried to lose weight in other ways that haven't worked.

We may also be able to offer you gastric bypass surgery if you have an existing medical issue linked to weight, although you must be prepared to change your lifestyle too. This means following the advice of our dietitians, for example, and making healthier food choices in future.

It'll also help is you engage in regular planned exercise after surgery to achieve, and maintain, your weight loss results. The impact of a gastric bypass can be life-changing, and our expert surgeons can advise you on whether you're a suitable candidate during your consultation.

WHY CHOOSE THE HOSPITAL GROUP FOR GASTRIC BYPASS SURGERY?

Let us help you achieve a healthier lifestyle. The Hospital Group has more than four decades of experience of providing Roux-en-Y and, more recently, mini gastric bypass surgery. With our high levels of care and years of experience, we help our patients to transform their lives for the better.

There are many benefits to coming to us for a gastric bypass procedure, which include:

Our medical facilities, including our own Burcot Hall private hospital in Bromsgrove, as well as a network of clinics located around the UK.

Highly qualified bariatric surgeons with in-depth experience and years of expertise, who are all fully registered with the General Medical Council - for your complete peace of mind.

A holistic approach to your health and wellbeing, starting from your first consultation with us and continuing right through to the comprehensive aftercare packages we offer.

As our patient, you're at the centre of everything we do. Each person in our care can expect to receive a standard of service that's personal to them and tailored to their requirements.

Not sure if gastric bypass surgery is right for you?

A free, no-obligation consultation is the best place to start. A patient advisor will talk you through your options, the cost and your recovery.

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Real resultsBefore and after photos, reviews and patient stories
Gastric Bypass Surgery patient 1, beforeBefore
Gastric Bypass Surgery patient 1, afterAfter
Patient 1 of 4Individual results vary.
Gastric Bypass Surgery patient 2, beforeBefore
Gastric Bypass Surgery patient 2, afterAfter
Patient 2 of 4Individual results vary.
Gastric Bypass Surgery patient 3, beforeBefore
Gastric Bypass Surgery patient 3, afterAfter
Patient 3 of 4Individual results vary.
Gastric Bypass Surgery patient 4, beforeBefore
Gastric Bypass Surgery patient 4, afterAfter
Patient 4 of 4Individual results vary.
Real patients

Before and after

These are real patients who had gastric bypass surgery with The Hospital Group and agreed to share their photos. Everyone is different, so your results will depend on your starting point, your health and your recovery.

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Reviews

What our patients say

Read more patient stories

Fantastic experience from the beginning…

“Fantastic experience from the beginning to the end. Dr Bhatty he is an amazing surgeon who worked his magic with a standard tummy tuck. He gave me the best results that exceed my expectations. Everyone was warm and welcoming. Thank you so much Samantha”
Mark S. · Tummy tuck16 July 2026

Fantastic service

“I had a tummy tuck, liposuction and breast augmentation back in November 2019 from my first appointment everything has been spot on my surgeon Mr Alamouti has done a fantastic job. Everyone at transform Norwich have been so helpful can’t do enough to help. I would highly recommend.”
Karen B. · Tummy tuck and liposuction6 January 2020

Amazing, personal service

“I can’t quite put in to words how happy I am with the service I have received throughout the process of my gastric sleeve surgery… Thankyou to my surgeon Mr Richardson. He made me feel at ease about the whole experience…”
Jenna S. · Gastric sleeve15 October 2021

Ready to talk about your gastric bypass surgery?

Get your personal price, see finance options and check surgery dates with a patient advisor.

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Price and aftercareWhat is included, finance and your personal price
Included in your price

Everything from your first call to your aftercare

One price covers your consultations, your surgery and a full package of aftercare support, so there are no surprises later.

Free telephone consultation

Talk through why you are interested in surgery, the cost, your recovery time and possible surgery dates with our friendly surgeon assistants.

Consultation with your surgeon

Go through your goals and medical history, the results you might expect and the possible risks, with plenty of time for questions.

Unlimited post-op appointments

See a member of our clinical team whenever you need to after your surgery.

Surgical cover for 2 years

Revision surgery where clinically indicated, for complete peace of mind.

Extra hospital days and medication

Additional days’ stay in hospital when needed, plus additional medication and dressings at no extra cost.

24/7 patient helpline

Emergency telephone support you can use at any time to speak to a member of the clinical team.

Cost

Spread the cost

You can pay for your surgery in monthly instalments with finance from humm, subject to status.

See finance options →
Gastric bypass surgeryFind out what your surgery could costUse our Procedure Price Check, or book a free consultation and your surgeon assistant will let you know the cost. Procedure Price CheckBook a free consultation

Gastric Bypass Surgery Brochure

Everything you need to know, in one free guide.
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Procedure Price Check

Know your price before you decide

Our prices cover everything from the procedure itself, right through the post-op appointments and your aftercare.

Fixed price, no hidden extrasAftercare includedFinance available

Request your personalised price

Tell us a little about you and a patient advisor will be in touch with your price and next steps.

Prefer to talk? Call 01200 408343
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Your journeyFrom your first call to your aftercare
Next steps

Your journey step by step

  1. 1

    First appointment

    Your journey with The Hospital Group begins with a telephone consultation with our friendly surgeon assistants. During this conversation you can talk through why you’re interested in surgery, how much it costs, how much recovery time you’ll need, and potential surgery dates. Whenever you decide to book a surgery date, you can secure it for a minimum refundable deposit of £500.

    If you would like to proceed, we will book your free weight loss consultation.

  2. 2

    Surgical consultation

    During the consultation with your surgeon, you will talk about your goals for surgery and go through your medical history to ascertain whether you are a suitable candidate for this procedure. You will also discuss the results you might expect, as well as the possible risks and complications of surgery. You will then be referred to a clinic nurse for pre-operative assessments and tests and a dietitian for discussion and advice on the pre- and post-operative diet.

  3. 3

    The surgery

    You will meet your surgeon on the day of your surgery so that you can talk through any final questions you might have and read through the consent form. The whole surgical team will be introduced to you before heading into theatre for the procedure.

    The specifics of surgery will be discussed prior to the day – you will find out how long it will take, the types of anaesthetics used, and they will talk you through the procedure itself.

  4. 4

    Recovery

    Following weight loss surgery, you will need to stay in hospital for the initial stages of your recovery. You will likely feel swollen and in some pain following the procedure. Our friendly nursing team will be on hand to look after you and provide any painkillers you might need.

    Immediately after surgery, you will be given intravenous drip hydration so that your fluid levels are maintained. The procedure is carried out under general anaesthetic, so you will need to arrange for someone to drive you home when you are discharged. We recommend that you have someone with you until the effects of the anaesthetic wear off.

    We will talk you through taking care of yourself at home before you leave hospital. There is also a 24/7 helpline available to you where you can call a member of the clinical team at any time for support.

  5. 5

    Aftercare

    The surgery itself is only the beginning, and we believe in the highest standard of aftercare following your procedure. Your body needs time to heal, and you will need to stay off work until you feel ready to return. You should also avoid any heavy lifting or strenuous activity for around six weeks. Recovery periods can be discussed with your surgeon before the procedure.

    There are a number of different aftercare packages available to help aid you in your weight loss journey and these will be discussed during your consultation process. You can read more about these on our aftercare page.

Smiling woman standing by the sea
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Your surgeonsMeet the team, plus answers to common questions
FAQ

Gastric Bypass Surgery FAQs

Can't find the answer you need? Our patient advisors are happy to help.

Why get gastric bypass surgery?
Like any surgical procedure, having a gastric bypass is a major decision, but there can be great benefits from it. It’s a proven method of weight loss, and is ideal when you have a lot of weight to lose and have already tried many conventional methods without long-term success.
For anyone suffering with serious obesity, the advantages of gastric bypass surgery often tend to outweigh the risks. The benefits can include: − Improvements in heart disease and cancer risk factors − Lower cholesterol levels − Improvements in a range of health conditions including sleep apnoea, asthma, joint pain, arthritis, reflux, fatigue, and shortness of breath − Ongoing support from our aftercare team as you adjust to life after surgery The third 2020 National Bariatric Surgery Registry Report also found how the Roux-en-Y gastric bypass reduced the incidence of Type 2 diabetes in patients from 34% to 14% in only one year. The prevalence of hypertension also fell from 38% to 22% in the year after Roux-en-Y surgery.
Here at The Hospital Group, our specialist team will help you find the weight loss solution that’s right for you. We offer several different procedures, including gastric bypass, gastric band and gastric sleeve surgery. As part of your initial consultations, your surgeon assistant and surgeon will guide you through the key differences between a gastric bypass and other options. That way, we can help you find the best solution that’s in line with your weight loss goals.
Gastric bypass surgery is a proven method of weight loss which could be perfect if you’ve tried other conventional methods without seeing long-term success. We can offer a complete service, including skilled surgeons, specialist dietitians, nurses, and weight loss support team members. We see this as the best way to help you get the best possible results from your weight loss journey. The operation is carried out under general anaesthetic, generally using keyhole (laparoscopic) surgery. This means your surgeon will make several small cuts into your stomach and use a set of small medical instruments that are guided by a telescope equipped with a camera. A stapling device is used to make the pouch at the top of your stomach. The next step is to cut the small intestine and connect to the stomach pouch. The amount of small intestine ‘bypassed’ will be determined by the weight you want to achieve, and the nutrients required to maintain it. The small cuts will then be closed by your surgeon with stitches or metal clips.
This depends on the patient, the surgeon, and the type of gastric bypass operation. For Roux-en-Y procedures, it normally between 90 minutes and two hours if carried out by keyhole surgery. A mini-loop gastric bypass can be a quicker procedure. If you’re having a gastric band removed at the same time, the operation will usually take longer. But you can discuss this with your surgeon.
After gastric bypass surgery, you’ll only be able to manage smaller portions of food and as a result your body will absorb fewer calories. There will also be changes in your gut hormones that will lead to reduced feelings of hunger, so you should feel satisfied for longer on smaller portions. As with any weight loss, a healthy diet and regular exercise are needed to ensure you achieve the best results. And this means you’ll have to make a few lifestyle changes.
Again, this depends on the patient and the surgeon. Usually, you’ll stay in one of our specialist hospitals for 2-3 nights after your surgery, but in some cases you can return home after one night.
The gastric bypass recovery time varies from person to person. Your surgeon and bariatric team will tell you what this will be for you as part of your personalised care plan. After you leave hospital, we advise you don’t do anything too strenuous for at least six weeks after your surgery.
As with any surgery, there can be complications during and after surgery. These include: − Bleeding − Complications due to anaesthesia and medications − Infections − Blood clots on the lung − Deep vein thrombosis − Wound breakdown or leaks from the staple line − Spleen injuries − Marginal ulcers Such complications are rare, however. Our expert surgeons are highly skilled and experienced in performing bariatric procedures, with a proven record of safe, successful surgery. We’ll be sure to make you aware of all the possible short and long-term risks of gastric bypass surgery too. That way, you’re fully informed before you decide to have the procedure.

A gastric bypass could be suitable if you have a BMI of 40 or more – or a BMI of 35 or more if you have an obesity-related condition such as Type 2 diabetes. New guidelines state that surgery should be offered as a first-line treatment if you were recently diagnosed with Type 2 diabetes and your BMI is over 30. These are just guidelines, however, and every patient is different.

The World Health Organization (WHO) believes that being overweight/obese is major risk factor for diabetes. The unique changes in gut hormones that follow a gastric bypass are also thought to improve diabetic control, independently of weight loss. While we can’t guarantee that your personal management of diabetes will change, many of our patients have reduced their diabetic medications and improve their condition overall.

No – this type of surgery is permanent. If you’re looking for something less permanent, gastric band surgery could be an alternative.

It’s possible to revise your gastric bypass. But this does have increased risks of complication. For this reason, a second gastric bypass generally won’t be offered if you’ve regained weight and didn’t make the changes needed to your diet and lifestyle.
It’s really important you follow the advice of your dietitian and surgeon in relation to your diet after a gastric bypass. You’ll need to follow a nutritious and healthy diet, making sure you consume the right amounts of protein and vitamins. Our team will go through this in detail with you, so you know exactly what you can eat after a gastric bypass. As you can’t absorb as many minerals and vitamins after gastric bypass surgery, you must take supplements for the rest of your life. You’ll also need regular blood tests to check for any nutritional deficiencies After 2-3 months, most patients are usually back on a varied diet of solid food. Some patients may struggle with certain textures of food, however, such as bread or red meat. In addition, a phenomenon known as Dumping Syndrome can occur if too much sugar is consumed. This results in symptoms such as dizziness, sweating, palpitations, and bloating. Patients often say these symptoms can help stop them from eating too much sugar and enhance weight loss.
A gastric bypass won’t affect what you can drink, or how much. But it’s vital to remember the dietary advice that our team will give you to help achieve your goals. Drinks high in sugar (e.g., colas) or calories (e.g., alcohol) can reduce the weight loss impact of a gastric bypass.
Our expert team of dietitians will talk to you in detail about what foods you can eat after gastric bypass surgery, and help you make sure you’re getting all the nutrition you need. Generally, you’ll have to follow a more nutritious diet after a gastric bypass, since your portions will be smaller and fewer nutrients will be absorbed. It’s important you are managing a good protein intake, so our dietitians will advise you on this. Also, because you won’t be able to absorb as many minerals and vitamins after your gastric bypass, you’ll have to take supplements for life and will need regular blood tests to check for any nutritional deficiencies. Here at The Hospital Group, we offer a wide range of weight loss supplements to help you with your gastric bypass diet.

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