Rachel before her gastric bypass surgery Rachel after gastric bypass surgery, losing 17 stone

Weight Loss Surgery

Gastric Bypass Surgery

Gastric Bypass surgery is still the gold standard operation, which all the newer operations are compared to.

There are different variations of the gastric bypass, but in common all of them have a small rectangular gastric pouch, approximately 20-30ml in volume made from the upper stomach.

Rachel before her gastric bypass surgery Rachel after gastric bypass surgery, losing 17 stone
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What are the benefits of Gastric Bypass surgery?

Gastric bypass surgery provides an effective solution for individuals who have struggled with weight loss, helping them regain control and live a healthier, happier life.

In addition to significant weight loss, the procedure encourages the release of beneficial hormones, which help reduce hunger and promote consistent weight loss.

On average, patients can expect to lose 30-35% of their body weight over 9-12 months, leading to long-term, sustainable results.

How does a Gastric Bypass work?

After a gastric bypass, it becomes challenging to eat quickly or consume large portions, as the surgery reduces the size of your stomach, encouraging smaller meals and a slower pace of eating. Additionally, the surgery alters the guts hormone levels which regulate appetite. This hormonal shift reduces feelings of hunger and decreases interest in food, making it easier to maintain a lower calorie intake and support long-term weight loss goals. Eating too much can lead to discomfort and may cause vomiting. 

Is the Gastric Bypass right for me?

The Gastric Bypass has been designed to support patients with a Body Mass Index (BMI) of 35 or more, with other medical conditions, such as diabetes or high pressure or for someone with a BMI of 40 and above and you can calculate this via our online tool.  

To achieve success with any weight loss surgery, including gastric bypass, patients must be committed to following the advice of their clinical team and working hard to make necessary lifestyle changes. However, not everyone is a suitable candidate for the procedure. An initial assessment with a Bariatric Consultant Specialist is required to determine if the Gastric Bypass is the right option for you. 

Weight Loss Stories

Rachel's story

I feel like I’m finally becoming the person I was meant to be..

Rachel lost 17 stone with the Gastric Bypass

Don't take our word for it,our customers say it best.

Speak to our weight loss team

Our team of dedicated weight loss experts are here to guide and support you every step of the way, chat to one of the team today to find out the best solution for you.

A weight loss provider you can trust

Streamline is a leading weight loss provider in the United Kingdom, owned and led by experienced weight loss surgeons Shaw Somers & Guy Slater. With over two decades of dedicated service, we have earned a reputation for excellence in delivering both surgical and non-surgical weight loss solutions. Our commitment to patient care is reflected in our track record of supporting thousands of individuals in achieving their weight loss goals.

At Streamline, we take pride in working exclusively with the most highly rated and skilled surgeons in the country. Whether you are seeking surgical interventions, such as bariatric surgery, or exploring non-surgical options, we ensure that every treatment is tailored to your unique needs.

Streamline Weight Loss Founders, Shaw Somers & Guy Slater

Premium aftercare packages

Throughout the duration of your aftercare, and beyond, we are here to support you on the journey to a healthier you.

Our commitment to you extends beyond your initial aftercare package, which is why we our team are always on hand to provide you with any additional support or advice you need.

Our aftercare packages have been built by specialist bariatric experts to support you for life.

aftercare is an essential component of gastric sleeve surgery.

Gastric bypass surgery costs

At Streamline, we are proud to offer some of the most competitive prices for gastric bypass surgery in the United Kingdom, with prices starting from £9,950.

We have built different price plan options focussing on a personalised solution, tailored to you and your budget.

You can find out more about our different plans below:

gastric sleeve surgery costs and finance options

Real weight loss stories

At Streamline, we’ve been proudly supporting our weight loss patients on their weight loss journeys since 2006. 

They are an incredible example to others considering taking the next step on their weight loss journey. 

real weight loss stories from our previous weight loss surgery patients

Personalised aftercare, tailored to you

At Streamline Weight Loss, we’re proud to offer some of the most competitive gastric bypass surgery prices in the UK, with packages starting from £9,950. This all-inclusive price covers your full pre-operative assessments, the surgery itself, and a personalised aftercare packages to support your long-term success.

Swipe to view aftercare plans >

Gastric Sleeve Insurance via Vitality Health

Weight Loss Surgery with VitalityHealth Insurance

We are proud to partner with VitalityHealth, the UK’s exclusive private health insurer offering coverage for weight loss surgery.

If you’re a VitalityHealth policyholder, you may be eligible to undergo weight loss surgery at Streamline.

Our Gastric Bypass Surgery Locations

We provide weight loss surgery across a number of locations around the South of England and Birmingham, our team of patient advisors are on hand to help find the most suitable location for you. 

Chelsea & Westminster Hospital

369 Fulham Rd, London, United Kingdom, SW10 9NH

The Spire Bushey Hospital

Heathbourne Rd, Bushey WD23 1RD, United Kingdom

The Luton & Dunstable University Hospital

NHS Foundation Trust, The L&D Hospital, Lewsey Rd, Luton LU4 0DZ, United Kingdom

The Berkshire Independent Hospital

Swallows Croft, Wensley Rd, Coley Park, Reading RG1 6UZ, United Kingdom

Chelsfield Park Hospital

Bucks Cross Rd, Chelsfield, Orpington BR6 7RG, United Kingdom

Nuffield Health Guidford Hospital

Stirling Rd, Guildford GU2 7RF, United Kingdom

One Hatfield Hospital

Hatfield Ave, Hatfield AL10 9UA, United Kingdom

BMI Clementine Churchill Hospital

Sudbury Hill, Harrow HA1 3RX, United Kingdom

Spire Portsmouth Hospital

Bartons Rd, Havant PO9 5NP, United Kingdom

Queen Alexandra NHS Trust Hospital

Cosham, Portsmouth PO6 3LY, United Kingdom

Meet our Gastric Bypass Surgeons

As leading weight loss experts in the UK, Streamline only work with the very best surgeons who have extensive experience in performing gastric bypass surgeries with amazing results.

Your questions answered

Common questions

The gastric bypass reduces appetite meaning most patients feel much less hungry and in some cases may forget to eat this is because the gastric pouch limits food intake and portion sizes become much smaller with an early feeling of fullness which will lead to a restriction in a patients’ calorie intake. There may also be a malabsorption of fat, minerals and vitamins and patients need to take vitamins and minerals each day to prevent deficiencies along with a regular dietetic review.

For most surgeons, a straightforward gastric bypass in a BMI 40kg/m2 woman will take about 90 to 120 minutes, not including the anaesthetic time. A much larger, more difficult BMI 60kg/m2 man, or a revision operation, may take much longer, up to three hours. However, it’s not important how long a patient spends under anaesthetic; it is much more important the surgery is completed carefully to minimise the risk of any complications.

In practice, there are two types of gastric bypass, the original Roux en-Y gastric bypass and the newer one anastomosis gastric bypass, also known as the mini gastric bypass.

At Streamline, we are proud to offer some of the most competitive prices for gastric bypass surgery in the United Kingdom, with prices starting from £9,950.

Most patients take about two weeks to recover after surgery and return to their normal activities including work. During your recovery you should be able to walk around your house and garden and look after yourself.

Start your weight loss journey today

Enquire now

Call us to chat on: 0333 016 3030 (local rate) or fill in our contact form below.

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