Weight Loss Surgery in Gloucester
Speak to our weight loss clinic in GloucesterSpecialist Bariatric Care for Patients Ready to Take the Next Step
Deciding to explore weight loss surgery is often the result of months, or even years, of careful thought. For many people, it follows repeated attempts to lose weight through dieting, exercise and other methods that have provided only temporary results. Reaching the point where you seek specialist advice is not a sign of failure. It is often the first step towards making a lasting investment in your health.At Tonic Weight Loss Surgery, our Gloucester location provides specialist bariatric care for patients across Gloucestershire, the South West and surrounding counties who are looking for expert guidance, experienced surgical care and long-term support.
Your treatment takes place at The Winfield Hospital, a modern private hospital where patients benefit from high clinical standards, experienced healthcare professionals and a comfortable environment designed to support every stage of their journey.
Many of the patients who visit our Gloucester clinic are not simply looking for surgery. They are looking for answers. They want to understand whether weight loss surgery is appropriate for them, which procedure may be most suitable and what life could realistically look like after treatment.
That is why every journey begins with a detailed consultation. Rather than encouraging patients towards a particular procedure, we take the time to understand your health, your previous weight loss experiences and the goals you hope to achieve. Every recommendation is based on clinical suitability, helping ensure you receive the treatment that offers the safest and most appropriate long-term outcome.
Whether you live locally or are travelling from elsewhere in the South West, our focus remains the same. We provide clinically led care, honest advice and ongoing support that helps patients make informed decisions with confidence.
Supporting Patients Across Gloucestershire and the South West
Although our clinic is based in Gloucester, we support patients from across Gloucestershire and the wider South West who are looking for specialist bariatric care delivered by an experienced team.
Patients regularly travel from Cheltenham, Stroud, Cirencester, Worcester, Hereford, Bristol and surrounding areas because they value the personalised approach, experienced surgical care and ongoing support that Tonic provides.
For many people, travelling to Gloucester is not simply about attending a hospital appointment. It is about accessing specialist weight loss surgery within a trusted private healthcare environment where every stage of treatment is planned around their individual circumstances.
Whether you are travelling a short distance or coming from elsewhere in the region, our team works hard to ensure the experience feels straightforward, supportive and centred around helping you achieve sustainable long-term results.
Why Patients Choose Our Gloucester Clinic
Patients choosing our Gloucester clinic are often looking for specialist advice before making one of the biggest healthcare decisions of their lives.
Rather than searching for the quickest route to surgery, they want experienced professionals who will help them understand every available option and recommend the treatment that is genuinely right for them.
Patients choose our Gloucester location because they value:
- Experienced bariatric surgery delivered within a regulated private hospital.
- Personalised consultations focused on long-term health and wellbeing.
- Honest recommendations based on individual clinical needs.
- A supportive team committed to patient education and informed decision-making.
- Ongoing guidance before, during and after surgery.
- A structured 5-year aftercare programme designed to support lasting success.
Many people also appreciate the calm, patient-centred approach that defines every consultation. We recognise that no two weight loss journeys are the same, which is why every discussion begins with understanding the individual rather than the procedure.
This allows patients to move forward knowing their treatment plan has been developed around their health, lifestyle and future goals, not simply around a particular operation.
If you’re considering weight loss surgery, book a consultation with our Gloucester team to discuss your options, ask questions and receive personalised advice tailored to your health and long-term goals.
Join thousands of happy Gloucester patients
Thousands of Tonic patients rave about the life-changing surgeries they had with Tonic. We’re incredibly proud of the stories that Tonic patients share, both from Gloucester and around the UK.
You can read more success stories by clicking the link below.
Weight Loss Procedures Available
Every patient arrives with different health priorities, weight loss goals and medical considerations, which is why treatment always begins with a detailed assessment before any procedure is recommended.
At our Gloucester clinic, patients have access to several established bariatric procedures that support long-term weight management when combined with ongoing lifestyle changes and professional aftercare.
Gastric sleeve surgery reduces the size of the stomach, helping patients feel satisfied with smaller portions while supporting significant and sustainable weight loss over time.
Here are the key details on our Gastric Sleeve Surgery in Gloucester:
- Average recovery time for a gastric sleeve procedure is 7 days.
- Gastric sleeve surgery usually lasts around 60 minutes.
- Gastric bypass patients should expect to lose 70-75% of their excess weight.
- The procedure involves 5 small abdominal incisions.
- Tonic’s premium aftercare is included in our Gastric sleeve surgery package!
Gastric bypass surgery combines stomach reduction with changes to the digestive system and may be recommended for patients who require more substantial weight loss or are managing obesity-related health conditions.
Here are the key details on our Gastric Bypass Surgery in Gloucester:
- Average recovery time for gastric bypass procedures is 10 to 14 days.
- Gastric bypass surgery usually lasts around 60 minutes.
- Gastric bypass patients should expect to lose 60-70% of their excess weight.
- The procedure involves 5 small abdominal incisions across the middle and upper abdomen.
- Tonic’s premium aftercare is included in our Gastric bypass surgery package!
The mini gastric bypass provides an alternative surgical approach that may be appropriate for selected patients depending on their health, BMI and long-term treatment objectives.
Here are the key details on our Mini Gastric Bypass Surgery in Gloucester:
- Average recovery time for our mini gastric bypass procedures is 10 to 14 days.
- Mini Gastric Bypass surgery usually lasts around 70 minutes.
- Mini Gastric Bypass patients should expect to lose between 60% and 70% of their excess weight.
- The procedure involves 5 small abdominal incisions across the middle and upper abdomen.
- Tonic’s premium aftercare is included in our Mini Gastric Bypass surgery package!
Gastric sleeve surgery reduces the size of the stomach, helping patients feel satisfied with smaller portions while supporting significant and sustainable weight loss over time.
Here are the key details on our Gastric Sleeve Surgery in Gloucester:
- Average recovery time for a gastric sleeve procedure is 7 days.
- Gastric sleeve surgery usually lasts around 60 minutes.
- Gastric bypass patients should expect to lose 70-75% of their excess weight.
- The procedure involves 5 small abdominal incisions.
- Tonic’s premium aftercare is included in our Gastric sleeve surgery package!
Gastric bypass surgery combines stomach reduction with changes to the digestive system and may be recommended for patients who require more substantial weight loss or are managing obesity-related health conditions.
Here are the key details on our Gastric Bypass Surgery in Gloucester:
- Average recovery time for gastric bypass procedures is 10 to 14 days.
- Gastric bypass surgery usually lasts around 60 minutes.
- Gastric bypass patients should expect to lose 60-70% of their excess weight.
- The procedure involves 5 small abdominal incisions across the middle and upper abdomen.
- Tonic’s premium aftercare is included in our Gastric bypass surgery package!
The mini gastric bypass provides an alternative surgical approach that may be appropriate for selected patients depending on their health, BMI and long-term treatment objectives.
Here are the key details on our Mini Gastric Bypass Surgery in Gloucester:
- Average recovery time for our mini gastric bypass procedures is 10 to 14 days.
- Mini Gastric Bypass surgery usually lasts around 70 minutes.
- Mini Gastric Bypass patients should expect to lose between 60% and 70% of their excess weight.
- The procedure involves 5 small abdominal incisions across the middle and upper abdomen.
- Tonic’s premium aftercare is included in our Mini Gastric Bypass surgery package!
Need Help Choosing the Right Procedure?
Every patient’s journey is different. Speak to one of our patient coordinators and we’ll help you understand which weight loss procedure is most appropriate before arranging your consultation.
Meet Your Gloucestershire Bariatric Surgeon
Patients attending our Gloucester clinic are cared for by an experienced bariatric surgeon who believes successful treatment begins with careful planning and open communication.
Mr Andrei Ilszyzyn
Mr Andrei Ilszyzyn performs gastric sleeve surgery, gastric bypass and mini gastric bypass procedures for patients seeking specialist weight loss surgery in Gloucestershire.
Every consultation is centred around understanding the individual rather than simply discussing surgery. Mr Ilszyzyn takes time to explore each patient’s medical history, previous weight loss experiences and long-term aspirations before recommending the treatment that is most appropriate for their circumstances.
His approach places particular emphasis on helping patients fully understand both the benefits and considerations associated with weight loss surgery. By ensuring every recommendation is supported by clear clinical reasoning, patients are able to make informed decisions with confidence and realistic expectations.
This thoughtful approach to consultation forms an important foundation for achieving successful long-term outcomes.
Why Taking the Next Step Matters
Many people spend years wondering whether weight loss surgery is the right option for them.
Some continue trying different diets despite repeatedly regaining weight. Others postpone seeking advice because they are unsure whether they are eligible or worry about what surgery might involve.
For many patients, however, speaking with a specialist provides clarity that they have been searching for. Even if surgery is not immediately appropriate, understanding the available options can help patients make informed decisions about the future rather than continuing to struggle alone.
At Tonic, consultations are designed to educate rather than persuade. We believe patients should fully understand every available option before deciding whether surgery is right for them.
Taking that first step often provides reassurance, greater confidence and a clearer understanding of how specialist weight loss surgery could support long-term improvements to health and wellbeing.
Preparing for Long-Term Success
Successful weight loss surgery begins well before the day of the operation.
Preparing for treatment involves understanding dietary changes, setting realistic expectations and developing the habits that will support long-term success after surgery. We believe these early stages are just as important as the procedure itself because they provide the foundation for lasting results.
Our team works closely with every patient throughout this preparation period, ensuring they feel informed, supported and confident before moving forward.
This commitment to preparation naturally continues into our structured aftercare programme, where professional guidance remains available as patients adapt to life after surgery and continue progressing towards their long-term health goals.
Five Years of Dedicated Aftercare
At Tonic Weight Loss Surgery, we believe the quality of support patients receive after surgery is just as important as the procedure itself.
That is why every Tonic patient benefits from our structured 5-year aftercare programme, helping ensure they continue receiving professional guidance long after they leave hospital.
During the first two years, patients receive one-to-one support from:
- A specialist psychotherapist.
- A registered dietitian.
- A bariatric nurse.
- A dedicated fitness professional.
- Ongoing follow-up with their surgeon.
Together, this multidisciplinary team helps patients manage dietary changes, build healthier routines and overcome many of the challenges that naturally arise following significant weight loss.
Support then continues through a further three years of telephone aftercare alongside continued surgeon follow-up, providing reassurance that expert advice remains available throughout every stage of the journey.
For many patients, this ongoing commitment to long-term success is one of the biggest reasons they choose Tonic Weight Loss Surgery. It reflects our belief that sustainable change is achieved through continued partnership, not surgery alone.
Learn more about our aftercare
Unlimited Dietician Appointments for 2 years
Unlimited Psychotherapist Appointments 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
Speak to Our Team
Want to find out more about our 5-year aftercare programme? Request a call back and discover how our specialist multidisciplinary team continues supporting patients long after surgery has taken place.
Your Journey with Tonic
Every patient’s journey into weight loss surgery begins differently, but the support they receive should always feel consistent.
From your first conversation with our team, the focus is on understanding your health, your previous experiences with weight management and the changes you hope to achieve. Rather than rushing patients towards treatment, we take time to explain the available procedures, answer questions honestly and ensure you have a clear understanding of every option before making a decision.If surgery is recommended, we will help you prepare both physically and mentally for the procedure. You will receive detailed information about pre-operative requirements, dietary changes, recovery expectations and the adjustments that support long-term success after treatment.
Following surgery, our team continues to support you through regular follow-up appointments and our structured aftercare programme. As your body changes and your confidence grows, we remain available to provide practical advice, monitor your progress and help you overcome any challenges that arise along the way.
For us, successful weight loss surgery is measured not only by the amount of weight a patient loses, but by the lasting improvements they experience in their health, wellbeing and everyday life.
Investing in Your Future Health
Weight loss surgery is often viewed as an investment, but for many patients it is not simply a financial one.It is an investment in improved mobility, better overall health, greater confidence and a future with fewer limitations. Many patients tell us they are motivated by the opportunity to become more active, reduce obesity-related health risks and enjoy a better quality of life for themselves and their families.
By choosing a provider that combines experienced bariatric surgeons with structured long-term aftercare, patients are investing in ongoing support as well as the procedure itself.
This long-term approach reflects our belief that meaningful, sustainable weight loss is built through continued guidance, education and partnership rather than surgery alone.
Flexible Finance Options
We understand that private weight loss surgery is a significant decision and that many patients prefer the flexibility of spreading treatment costs over time.Flexible finance options are available for Tonic patients, helping make treatment more manageable while allowing you to focus on choosing the procedure that is most appropriate for your health.
During your consultation, our team will explain the available finance options, discuss costs openly and answer any questions you may have so you have a clear understanding before making your decision.
Our aim is to provide transparent information in a supportive environment, allowing you to move forward with confidence when the time feels right.
Hi I'm Cat Bevin
I’m a Tonic Patient Coordinator; I’m here to help you start your weight loss journey
It’s my job to support you through your journey with Tonic, from initial consultation where we’ll learn all about you and your weight loss journey to date, through to your 5 years of aftercare with our specialist team. We’re here for you at every stage.
FAQs
Easy access by car via the A40/A38 and M5; we’ll send arrival notes with your booking.
Yes
Yes, Gloucester station has good links, and we’ll advise the easiest route for your slot.
Mr Andrei Ilczyszyn operates from this location.
Eligibility depends on several factors, including your BMI, medical history, overall health and previous attempts to lose weight. Your surgeon will assess these during your consultation before recommending the most appropriate treatment.
BMI helps your surgeon assess whether weight loss surgery is likely to be safe and appropriate for your circumstances. It is considered alongside many other factors rather than being the only measure used when recommending treatment.
Yes. Many of our patients travel from across Gloucestershire and the South West to receive treatment at our Gloucester clinic because they value specialist bariatric expertise and comprehensive aftercare.
Tonic patients receive access to our structured 5-year aftercare programme, including one-to-one support from a psychotherapist, dietitian, bariatric nurse and fitness professional together with ongoing surgeon follow-up and continued telephone support.
Recovery varies depending on the procedure performed and your individual circumstances. Your surgeon will explain what to expect and provide personalised guidance throughout your recovery.
Book Your Gloucester Consultation
If you are considering private weight loss surgery, arranging a consultation is the first step towards understanding your options and deciding whether treatment is right for you.
During your appointment, you will have the opportunity to discuss your health, ask questions and receive personalised advice from an experienced bariatric surgeon. Whether you are based in Gloucester or travelling from elsewhere, our team is here to provide the guidance and reassurance you need to make a confident, informed decision.
At Tonic Weight Loss Surgery, we combine specialist bariatric expertise, trusted private hospitals and one of the UK’s most comprehensive aftercare programmes to help patients achieve meaningful, sustainable weight loss. From your first consultation through to surgery, recovery and years of ongoing support, every stage of your journey is focused on helping you build a healthier future.
Contact our friendly team today to arrange your consultation and discover how specialist weight loss surgery in Gloucester could help you take the next step towards lasting change.
The UK’s best rated weight loss surgery company.
Life changing stories
The UK’s best rated weight loss surgery company.
Life changing stories
Ally
10 st (64 kg)*
Weight Loss
“I have struggled with my weight all of my adult life, I have PCOS and every diet I have tried just wasn’t successful.
I have lost over 10 stone and I feel absolutely incredible. I would never have dreamt to have the life that I currently have now.”
Paul
10 st (64 kg)*
Weight Loss
“Life before surgery was fake, I had a happy face but was not really happy. I wouldn’t go on lads holidays with my friends or take my kids swimming.
I have lost over 10 stone and it’s been life changing. I have got my life back. I can now take my kids swimming, go on holiday, do those things that I should have done 10,15,20 years ago.”
Danni's
5 1/2 stone (35 KG)*
Weight Loss
“Before I had surgery, I’d always yo-yoed with my weight. I was ashamed because of the size I’d gotten to. I was unable to buy the clothes I wanted to wear. I didn’t feel like the person that I wanted to be nor did my reflection match the person I felt inside.
The surgery with Tonic has absolutely changed my life. I’ve lost 5 and a half stone, and I am more confident and outgoing.
Chanelle
9st (57kg)
Weight Loss
“Before weight loss surgery, I couldn’t cope with doing anything strenuous and I couldn’t spend time with my children in the way I wanted to. My eating was out of control, and I had been yo-yoing.
A year out from surgery, I’m a completely different person. Last year, my body fat percentage was in the morbidly obese category. Now, I’m in the healthy weight category.”
Claire
10 st (64 kg)*
Weight Loss
“I lost 8.5 stone. I feel like one of the gym girls, I have done a 10k this year and I am signed up to Brighton half marathon next year! I chose Tonic because I saw so many success stories online and because of the aftercare package. You have the dietician, the PT, the psychotherapist and the constant support group from others who have had surgery and the team in the office”
