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Revision bariatric - when the first operation is not enough.

Revision surgery for weight regain, reflux after sleeve, band complications or bypass problems - done by a consultant bariatric surgeon with MDT input from dietitian, psychologist and endocrinologist. Never a first-line answer to weight regain, but the right one when medical and behavioural work has been exhausted.

See indicative pricing
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Indicative pricing

What private revision bariatric surgery costs in the UK.

Indicative ranges across our bariatric network. Revision is always longer, more complex and more expensive than a primary - and often needs pre-operative medical and psychological work.

In short

£14,000–£22,000, home 2–3 nights.

Procedure Indicative range
Gastric band removal (stand-alone) £5,500–£9,000
Band removal + conversion to sleeve or bypass (single stage) £13,000–£20,000
Sleeve to Roux-en-Y gastric bypass (reflux or regain) £14,000–£22,000
Sleeve to SADI-S or duodenal switch (regain) £16,000–£25,000
Bypass revision (pouch or limb-length) £14,000–£24,000
Endoscopic revision (TORe, plication) £4,500–£8,000
Bariatric MDT and workup package £950–£1,800

Prices vary by hospital, by the surgeon, by whether the revision is done in one or two stages, and by whether it is laparoscopic or robotic. Duodenal switch and SADI-S conversions are always the top of the range.

The problem

Weight regain is medical before it is surgical.

Revision bariatric surgery is where general private practice quietly under-delivers - revisions offered to patients who would do better on GLP-1 therapy, and reflux misdiagnosed as regain.

  • Trial GLP-1 medication first

    Semaglutide, tirzepatide and liraglutide often produce meaningful additional weight loss after bariatric surgery - no theatre, no risk profile of a redo.

  • Rule out treatable causes

    Reflux after sleeve, dumping, marginal ulcer, band slippage - these are treated differently from pure weight regain.

  • Psychological and eating support matters

    Grazing, binge eating and stress-driven patterns undermine any operation. Address these before a second operation.

When it helps

When revision bariatric surgery earns its place.

The situations we see most, plus the red flag that means acute medical care before any surgical planning.

  • Refractory reflux after sleeve gastrectomy

    The commonest driver of sleeve-to-bypass revision. Confirmed on endoscopy and pH testing before theatre.

  • Gastric band complications

    Slippage, erosion, oesophageal dilatation, port infection - most bands now come out.

  • Weight regain after sleeve or bypass

    Recurrence of weight after initial success - always after a proper medical and behavioural work-up.

  • Stalled loss after primary

    Inadequate weight loss at 18–24 months in a patient with adherent behaviour - a distinct group from regain.

  • Marginal ulcer after bypass

    Recurrent ulcer at the gastrojejunal anastomosis - sometimes needs revision after PPI, smoking cessation and H. pylori treatment fail.

  • Dumping syndrome after bypass

    Post-prandial hypoglycaemia or vasomotor symptoms unresponsive to diet - sometimes revision, more often medical.

  • Malnutrition after malabsorptive surgery

    Rare after standard bypass, more common after distal bypass, DS or long-limb SADI-S - revision to shorten the malabsorptive limb.

  • Red flag: severe protein-energy malnutrition or vitamin deficiency

    Peripheral neuropathy, confusion, sudden weight loss or refractory oedema needs same-day medical review - not a routine bariatric booking.

Procedure options

The revision fits the original operation and the reason it failed.

What each option involves - from a simple band removal to a duodenal switch - and where non-operative revision is the right first step.

  • Band removal

    Stand-alone laparoscopic removal for slippage, erosion, dilatation or intolerance. Fast recovery. Weight will usually return without an alternative plan.

  • Band to sleeve conversion

    Removal and sleeve gastrectomy - either single or two-stage depending on inflammation. A common revision when the band has failed.

  • Band to Roux-en-Y gastric bypass

    Removal and RYGB - chosen for patients with reflux, higher BMI or diabetes. Usually a two-stage operation.

  • Sleeve to RYGB

    The gold-standard revision for refractory reflux after sleeve. Also offered for weight regain in selected patients.

  • Sleeve to SADI-S or duodenal switch

    For weight regain with higher BMI and adequate MDT support. More powerful weight loss, higher nutritional demands.

  • Roux-en-Y gastric bypass revision

    Pouch resizing, distalisation of the biliopancreatic limb, or revision of a dilated gastrojejunal anastomosis. Complex and reserved for selected patients.

  • Endoscopic revision (TORe, plication)

    Transoral outlet reduction of a dilated gastrojejunal anastomosis after bypass, or endoscopic sleeve plication for a dilated sleeve. Day-case, less durable than surgical revision.

  • Non-operative revision (medical + psychological)

    GLP-1 therapy, structured dietetic support, CBT for eating patterns and sleep optimisation - often the right first (and sometimes only) revision.

Safety and recovery

What to expect afterwards - honestly.

Revision bariatric surgery is more complex than a primary and less forgiving. The single biggest determinant of a good outcome is patient selection and MDT support, not the operation.

  • GA and enhanced recovery

    Every revision is under GA. ERAS - early sips, early mobilisation, no NG tube - is standard.

  • Higher complication rate than primary

    Revision has 2–3× the leak, bleeding and reoperation rate of a primary. Honest numbers, not marketing.

  • Anastomotic leak

    Leak rate after revision 2–8 percent depending on operation and surgeon. Managed with drainage, IV antibiotics and sometimes surgical revision.

  • Nutritional deficiencies

    Iron, B12, calcium, vitamin D, folate and - after SADI-S/DS - protein deficiency risk. Life-long supplementation and annual bloods.

  • Internal hernia after bypass or SADI-S

    A late complication needing urgent laparoscopy - sudden severe upper abdominal pain or intermittent obstruction warrants same-day review.

  • Marginal ulcer and dumping

    Ulcer risk after bypass reduced by smoking cessation, PPI and H. pylori eradication. Dumping usually managed with diet and medication.

  • Weight regain is possible after any revision

    Even a well-done revision does not guarantee lifelong weight maintenance. Behavioural support is not optional.

  • Mental health support matters

    Depression, alcohol misuse and disordered eating are more common after bariatric surgery. We screen and refer.

  • Red flags after surgery

    Fever, worsening abdominal pain, tachycardia, no return of bowel function, or new pelvic pain after day 3 need same-day team review - leak until proven otherwise.

Reading your operation note

Your operation note in four parts. Read the last one first.

Whichever revision was done - band removal, sleeve to bypass, or bypass revision - the note the bariatric surgeon sends you keeps to the same shape.

A UK bariatric surgeon reviewing a patient’s operation notes with a dietitian

A quiet reminder

Clinical language is precise and can read coldly - we translate it for you.

If you would like us to talk you through the notes and any results before your review, just ask.

  1. 01 Header

    Original operation and reason for revision

    What was done first, when, and why revision is being considered - regain, reflux, complication or malnutrition.

  2. 02 Technique

    Revision performed and anastomosis details

    Which revision, one or two-stage, laparoscopic or robotic, stapler and suture details, leak test result.

  3. 03 Findings

    Anatomy, adhesions, complications avoided

    What was found - adhesions, gastric dilatation, pouch size, limb lengths - and how it changed the plan.

  4. 04 Impression

    Post-op plan and life-long care

    Read this first: diet progression, supplementation, follow-up dates, GLP-1 continuation if any, and psychological support.

Recognised by major UK insurers

BupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealix

Revision bariatric surgery is sometimes covered when medically indicated (band complications, refractory reflux, marginal ulcer). Purely weight-regain revisions are usually self-pay.

Frequently asked

Everything we get asked about revision bariatric surgery.

Quick answers on weight regain, reflux, band complications and cost.

  • Is weight regain always a reason for revision?

    No. Weight regain first calls for a medical and behavioural revision - GLP-1 medication, structured dietetic support and psychological input. Around 20–30 percent of bariatric patients regain some weight in the long term; not all need surgery. Surgical revision is reserved for those where the non-operative route has genuinely been exhausted.

  • What is the best operation to revise a sleeve for reflux?

    Conversion to Roux-en-Y gastric bypass is the gold standard for refractory reflux after sleeve. It reliably resolves reflux in most patients, addresses stalled or regained weight, and is well described in the literature. Fundoplication is generally not recommended after sleeve gastrectomy.

  • Should I have my gastric band removed or converted?

    For band complications (slippage, erosion, dilatation) removal is essential. Whether to convert to a sleeve or bypass at the same sitting - or in two stages - depends on inflammation, symptoms and MDT judgement. Bands are rarely re-inserted; the field has moved on.

  • What are the risks compared with a primary bariatric operation?

    Revision has 2–3× the complication rate of a primary - leaks 2–8 percent, bleeding, and reoperation rates are all higher. Nutritional deficiencies are more common. This is why MDT selection and pre-operative optimisation matter more, not less, than for a first operation.

  • How much weight will I lose after a revision?

    Weight loss after revision is usually 40–70 percent of the loss expected from a primary of the same type, and less predictable. It depends on the reason for failure, the operation chosen, and - most of all - behavioural and medical support afterwards.

  • How much does private revision bariatric surgery cost in the UK?

    Roughly £5,500–£9,000 for band removal alone, £13,000–£22,000 for band or sleeve conversion, £14,000–£24,000 for bypass revision, and £16,000–£25,000 for SADI-S or duodenal switch. MDT workup £950–£1,800.

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