By WeightMedsCompare editorial team. Medically reviewed by Dr Christopher Smith, MB BS MRCPsych · September 2026.
Weight-loss injections on the NHS vs private: what's actually true in 2026
The NHS picture changed in 2026: GPs can now prescribe Mounjaro for some people. Here's the current state, with dates — and an honest look at who still ends up paying privately.
Key takeaways
- Since 23 June 2026 your own GP can prescribe Mounjaro on the NHS — but only at a BMI of 35+ with at least four qualifying conditions, and not every practice has opted in.
- Wegovy on the NHS is only available through specialist weight-management services, which have long waits and aren't taking new referrals everywhere.
- Private providers work to the medicines' UK licence (BMI 30+, or 27+ with a weight-related condition) — broader than the NHS, which is why most people end up paying privately.
- Some ethnic backgrounds qualify at a BMI about 2.5 points lower.
- If there's any chance you meet the NHS criteria, ask your GP first — it costs nothing.
The NHS picture changed in 2026
The NHS picture changed twice recently — GP prescribing began in June 2025 and widened in June 2026 — and most articles online are out of date. There are now three NHS doors, and all of them open from a GP consultation. Here's the current state, with dates.
Door 1: your own GP (Mounjaro only)
Since 23 June 2026, GPs can prescribe tirzepatide (Mounjaro) on the NHS for people with a BMI of 35 or more plus at least four of five qualifying conditions: type 2 diabetes, high blood pressure, heart disease, obstructive sleep apnoea, or abnormal blood fats (dyslipidaemia). BMI thresholds are 2.5 lower for some ethnic backgrounds. Prescribing now sits in the GP contract, but practices aren't required to take part — so access varies practice by practice, and every NHS prescription includes a mandatory lifestyle-support programme. The criteria widen again in April 2027 (BMI 40 or more with three conditions).
Door 2: an NHS specialist weight-management service
Your GP refers you; the service prescribes. This route has been funded since March 2025 for anyone with a BMI of 35 or more and one weight-related condition — and it's the only NHS route to Wegovy (BMI 35+ with a condition, or 30–34.9 with a condition and referral criteria). The honest caveat: waits are long and some services aren't taking new referrals.
Door 3: in some areas, a digital NHS service under patient choice
Some NHS-contracted digital weight-management providers can be reached by GP referral under the NHS's patient-choice rules. This route is new and varies a lot: whether a service prescribes medication differs by provider, and some local NHS areas restrict it. Worth asking your GP about — never something to count on.
The private route (the manufacturer licence)
Private providers prescribe within the medicines' UK licence, which is broader than the NHS specialist thresholds: generally a BMI of 30 or more, or 27 or more with a weight-related condition such as type 2 diabetes, high blood pressure or prediabetes. This is why many people who don't qualify on the NHS can be considered privately. A prescriber still assesses whether the medicine is safe and suitable for you.
Adjusted thresholds for some ethnic backgrounds
UK guidance from NICE recognises that health risks can begin at a lower BMI for people from South Asian, Chinese, other Asian, Middle Eastern, Black African or African-Caribbean backgrounds, and recommends lowering the BMI threshold by about 2.5 kg/m². Progressive private providers apply this, so an eligible person from these backgrounds may be considered from a BMI of around 27.5 (or 24.5 with a weight-related condition).
So who realistically ends up private?
Most people. The GP route requires four qualifying conditions; the specialist route has the waits. If your BMI is 30–35 with one condition or none, no NHS prescribing door is currently open to you, and private treatment (see our live comparison) is the realistic route. That's exactly what this site compares.
Check before you pay
If there's any chance you meet the NHS criteria, ask your GP first — it costs nothing. Our 60-second NHS eligibility check runs entirely on your device; we never see or store your answers. Criteria correct as at 29 August 2026, from NHS England's commissioning guidance for NICE TA1026 and ICB implementation guidance. NHS prescriptions carry the standard prescription charge unless you're exempt.
| NHS — your GP | NHS — specialist service | Private provider | |
|---|---|---|---|
| Medicine | Mounjaro (tirzepatide) only | Wegovy, and Mounjaro | Mounjaro, Wegovy, Saxenda, oral GLP-1 |
| Who qualifies | BMI 35+ with ≥4 of 5 qualifying conditions (2.5 lower for some ethnic backgrounds) | BMI 35+ with 1 condition, or 30–34.9 with a condition and referral criteria | BMI 30+, or 27+ with a weight-related condition (the UK licence) |
| Typical cost | Standard NHS prescription charge (free if exempt) | Standard NHS prescription charge (free if exempt) | Varies by provider — compare live prices |
| Typical wait | Varies by practice; many haven't opted in | Long; some services closed to new referrals | Usually a few days |
| How to access | Book a GP appointment | GP referral to the service | Online consultation with a regulated provider |
Not sure if the NHS could prescribe for you?
Our 60-second check works it out on your device — nothing is stored or sent.
Check my NHS optionsFrequently asked
- Can I get Mounjaro or Wegovy free on the NHS?
- Sometimes. Since June 2026, your own GP can prescribe Mounjaro (tirzepatide) on the NHS if you have a BMI of 35 or more plus at least four qualifying conditions — and not every practice has opted in. Wegovy (semaglutide) remains available only through NHS specialist weight-management services, which have long waits and aren't open to new referrals everywhere. Most people still don't meet the NHS thresholds, and you'd pay the standard prescription charge unless you're exempt.
- Why are the private BMI rules lower than the NHS ones?
- They reflect different things. The NHS thresholds are NICE's rules for NHS-funded specialist treatment; the private thresholds follow the medicines' UK licence (BMI 30+, or 27+ with a weight-related condition). They're not contradictory — just two different bases.
- Is buying weight-loss injections privately safe and legal?
- Yes, when you use a regulated UK provider — a prescriber registered with the CQC and a pharmacy registered with the GPhC. Avoid anyone selling prescription medicines without a proper consultation. A comparison site like this one shows regulatory status so you can check before you buy.
- Can I get weight-loss injections on the NHS?
- Sometimes. Since 23 June 2026 your own GP can prescribe Mounjaro (tirzepatide) on the NHS if you have a BMI of 35 or more plus at least four of five qualifying conditions — and not every practice has opted in. Wegovy is available only through NHS specialist weight-management services, which have long waits. Most people don't meet the NHS thresholds and are treated privately instead. If there's any chance you qualify, ask your GP first — it costs nothing.
- How do I get weight-loss injections on the NHS?
- Start with a GP appointment — every NHS route begins there. Your GP can either prescribe Mounjaro directly (if you meet the BMI-35-plus-four-conditions criteria and the practice has opted in), or refer you to an NHS specialist weight-management service (the only NHS route to Wegovy). Some areas also offer a GP referral to an NHS-contracted digital service. Every NHS prescription includes a lifestyle-support programme.
- Who qualifies for weight-loss injections on the NHS?
- For GP-prescribed Mounjaro: a BMI of 35 or more plus at least four of type 2 diabetes, high blood pressure, heart disease, obstructive sleep apnoea or abnormal blood fats (about 2.5 lower for some ethnic backgrounds). For a specialist service: a BMI of 35 or more with one weight-related condition, or 30–34.9 with a condition and referral criteria. A clinician makes the final decision. Private eligibility is broader — the UK licence allows BMI 30+, or 27+ with a weight-related condition.
- Are weight-loss injections safe?
- When prescribed and supervised by a regulated UK prescriber, GLP-1 weight-loss injections are licensed medicines with a well-studied safety profile. Like all medicines they have side effects — commonly nausea and digestive symptoms — and they aren't suitable for everyone, which is why a prescriber checks your health history first. The safety risk comes from unregulated sellers: only use a prescriber registered with the CQC and a pharmacy registered with the GPhC.
- Are the rules the same in Scotland, Wales and Northern Ireland?
- Not exactly. The criteria above apply to NHS England. Scotland, Wales and Northern Ireland set their own pathways (for example through the Scottish Medicines Consortium and local health boards), so availability, thresholds and waits can differ. Check with your GP or local health board for the position where you live.
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