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Weight Loss at The London Clinic

At The London Clinic we understand that everyone has their own personal struggles managing their weight.

Obesity is a complex medical condition associated with a great variety of complications affecting both physical and mental well-being.

Our highly experienced team of weight loss experts are here to help you decide on the weight loss solutions best suited to your unique needs.

They are ready to guide you through the process of getting the healthy new life you want.

Pair of feet on a scale


Related conditions

These conditions are associated with being overweight.

Surgical options

Weight loss (or bariatric) surgery at The London Clinic is performed by highly experienced and skilled weight loss surgeons using the latest techniques and equipment, backed up by excellent clinical care.

Bariatric surgery defines a group of surgical interventions that help people lose weight, induce remission of obesity-related diseases, and improve quality of life. 

A major goal of different bariatric surgeries is the reduction of excess body fat and improvement or remission of co-existing medical conditions, such as:

Bariatric procedures are classified as either restrictive or malabsorptive:

  • Restrictive procedures limit intake by creating a small gastric reservoir with a narrow outlet in order to delay emptying
  • Malabsorptive procedures include excising portions of the small intestine where nutrient absorption occurs.


Bariatric surgery options

Our weight loss surgeons have expertise in these procedures:

Sleeve gastrectomy

Suitable for patients with a BMI of 30 or greater

A sleeve gastrectomy reduces the size of the stomach by permanently removing about 75% of its volume.

The stomach is divided vertically from top to bottom leaving either a pyramidal or a banana shaped stomach that empties into the small intestine, which remains intact.

Sleeve gastrectomy details

Gastric bypass

Suitable for patients with a BMI of 50 or less

This is a more extensive and complex procedure than a sleeve gastrectomy. It is suitable for people with the above BMI range, as it is not safe to attempt in more obese patients.

A gastric bypass separates off a major part of the stomach, creating a small stomach pouch that reduces the amount of food you can eat.

Gastric bypass details

Mini-gastric bypass

A mini-gastric bypass carries a lower complication rate compared to a gastric bypass. Additionally, surgeons can perform this procedure in a shorter time period.

Other surgical options

  • Gastric balloon removal
  • Gastric band removal
  • Gastric band removal and conversion to gastric sleeve
  • Gastric band removal and conversion to gastric bypass
  • Gastric band removal and conversion to mini gastric bypass

BMI Calculator Tool

Please fill in your weight and height in the fields below, then click on ‘calculate’ to view your BMI with your results plotted on the graph.














What does your BMI result mean?

For most adults, an ideal BMI is in the 18.5 to 24.9 range. Below is the breakdown of the defined thresholds of weight:



Risk of associated

Treatments available

18.5 or less



18.5 – 24.9



25.0 – 29.9


Increased Risk

30.0 – 34.9


High Risk

35.0 – 39.9


Very High Risk

40.0 or greater

Morbidly Obese

Extremely High Risk

Support for surgical patients

Here's how we can help you, both before and after your procedure.


Patients will be given full access to our support team who will guide you through every stage of the process to ensure you’re as comfortable as possible throughout.

Bariatric surgery isn’t just about losing weight. We believe that successful outcomes are best achieved when patients are educated by a multidisciplinary team that includes nurses, dietitians and psychologists.

Pre-surgery support includes an initial assessment to determine your physical suitability for the relevant treatment as well as a phone consultation with a psychologist.

You will also have access to a dietician to discuss your dietary requirements before the operation, as well as our sport and conditioning therapists who can provide physiotherapy and aquatic therapy.


Following your surgery, our expert care team will be on hand to ensure you are best placed for your recovery and maintenance of weight loss.

The London Clinic offers both a six-week and six-month sport and physiotherapy plan. We also offer sessions with a psychologist to assist with your physical and mental wellbeing following the procedure.

Our dieticians will work with you to create a bespoke diet plan for you to follow.  You’ll also have access to cooking classes, with demos by our Head Chef Paul O’Brien, creating the best conditions for you to be able to maintain your weight loss whilst still enjoying your food.

Non-surgical options

Plus-size woman weighing pasta onto scales

Non-surgical weight loss treatment is another option if you have struggled to lose weight through your own methods.

Medication, injections and a gastric balloon/sleeve can be used alongside behavioural therapy to help encourage weight loss. The London Clinic can help you develop a plan to incorporate behavioural strategies to help change dietary habits and increase physical activity levels.

Non-surgical weight loss treatments are usually effective in inducing weight loss, although they will require you to follow a tailored diet plan in order to maintain the initial weight loss.

Non-Surgical procedures and TREATMENTS

Our experts can discuss these alternatives to surgery with you:

Endoscopic Sleeve Gastroplasty (ESG)

Suitable for patients with a BMI of 30 or greater

Endoscopic sleeve gastroplasty is a newer type of weight-loss procedure. Endoscopic sleeve gastroplasty reduces the size of your stomach using an endoscopic suturing device without the need for surgery.

This procedure may be an option if you're significantly overweight and diet and exercise haven't worked for you..

Endoscopic Sleeve Gastroplasty details

Gastric balloon

Inserting a gastric balloon is usually a safe and effective way of helping you achieve long-term weight loss if a simple approach involving eating less, improving your diet and doing more exercise does not work.

If you require further gastric balloons, these are available at a discounted rate.

Gastric balloon details

Weight loss medication

The London Clinic offers expert weight management with the revolutionary weight loss drug Saxenda®.

Our consultants can prescribe Saxenda as part of The London Clinic’s holistic weight control programmes. Saxenda can help you lose weight to improve your health, boost your well-being, and prepare for bariatric surgery.

Saxenda details

Frequently asked questions

Depending on the type of weight loss surgery, common side effects and symptoms can include:

  • a feeling of fullness much quicker, after eating much less food
  • the inability to eat certain foods
  • constipation
  • gallstones (which are harmless in most cases);
  • Dumping syndrome, which can occur after eating high sugar meals and involves nausea and vomiting. 

This will depend on the type of weight loss surgery procedure you have undergone.

Procedures such as adjustable gastric banding allow the gastric band to be removed in the future, meaning you can eat more food.

Other types of weight loss surgery - such as gastric bypass surgery and sleeve gastrectomy - are irreversible in most cases.

Proteins are vital after weight loss surgery. Small, high protein meals are typically recommended, and liquid protein supplements can also help to achieve what are known as 'protein goals'.

The profile of high-risk patients for weight loss surgery is not clearly defined at present in relation to BMI.

It is understood that vastly obese patients, who also have other conditions such as sleep apnea or asthma, may be classed as high-risk patients. 

A variety of vitamins and supplements are typically prescribed following weight loss surgery.

The length of time they need to be taken will depend on the procedure an individual has undergone, and whether it is reversible at a later date.

Hair loss following weight loss surgery is temporary in most cases.

Re-growth can be aided by an adequate intake of vitamins, minerals and proteins; helping to avoid long term hair loss.


It is usually recommended that women wait around 12 to 18 months after weight loss surgery- when their weight is more stable - before trying to get pregnant.

You can usually resume taking your existing medications following weight loss surgery. In the case of extended-release medications, alternative forms of medications can be prescribed.

For medications related to obesity, a smaller dose is typically needed after weight loss surgery. 

Non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen and aspirin should be avoided after weight loss surgery.  This is due to their ability to cause ulcers which are harder to treat.


Our world-leading experts treat a range of conditions related to weight management.

Our consultants will create a bespoke and personalised treatment plan for your weight loss.

Each of our consultants has a detailed profile, where you can review their sub-specialities and clinical interests.

Our appointment team will arrange for you to meet with a consultant as soon as it is convenient for you.

Related consultants

Consultant Bariatric and General Surgeon
Consultant Gastroenterologist and GI Endoscopist
Consultant Surgeon
Consultant Upper Gastrointestinal and Bariatric-Metabolic Surgeon

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