NHS vs Private: Getting GLP-1 Weight Loss Treatment

Two pathways to GLP-1 treatment in the UK. What each offers, what they cost, and how to decide which route is right for you.

At a Glance

NHS Private clinic
Cost Free at point of use From GBP 99.97/month (Wegovy)
Waiting time Weeks to months (varies by area) Same-day assessment, 2-3 day delivery
Treatment options Wegovy only (NICE-approved) Wegovy and Mounjaro
Eligibility (BMI) 35+ (32.5+ some ethnic groups) with comorbidity 30+ (or 27+ with comorbidity)
Treatment duration Maximum 2 years No fixed limit
Ongoing support Specialist weight management team Varies by clinic (some include coaching)
How to access GP referral to specialist service Online consultation (no referral needed)
Availability Varies by ICS area (postcode lottery) Nationwide

The NHS Pathway

How it works

  1. Speak to your GP — Tell them you're interested in GLP-1 treatment for weight management. They'll check your BMI, discuss your health history, and assess whether you meet the basic criteria.
  2. Referral to specialist service — If appropriate, your GP refers you to a specialist weight management service. Under NICE TA875, Wegovy must be initiated through these specialist services, not directly by GPs.
  3. Specialist assessment — The specialist team assesses your full eligibility: BMI threshold, weight-related conditions, previous weight management attempts, and suitability for treatment.
  4. Treatment begins — If eligible, Wegovy is prescribed and dispensed. You'll have regular follow-up appointments with the specialist team.
  5. 6-month review — Treatment is reviewed after 6 months. You must have achieved at least 5% weight loss to continue. Maximum treatment duration is 2 years.

Advantages

  • Free at point of use
  • Specialist weight management team support
  • Integrated with your NHS medical records
  • Multi-disciplinary approach (dietitian, psychologist, etc.)

Limitations

  • Waiting lists can be months long
  • Only Wegovy available (not Mounjaro)
  • Higher BMI threshold than private (35+ vs 30+)
  • 2-year treatment limit
  • Not available in all areas

The Private Clinic Pathway

How it works

  1. Choose a CQC-registered clinic — Compare clinics on SlimmingBoost by pricing, features, and regulatory status.
  2. Complete online consultation — Fill in a health questionnaire covering your weight, height, medical history, medications, and weight loss goals.
  3. Prescriber review — A GMC-registered prescriber reviews your submission. They may ask follow-up questions or request blood test results.
  4. Prescription issued — If clinically appropriate, the prescriber issues a prescription for Wegovy or Mounjaro. If not suitable, you're told why and aren't charged.
  5. Medication delivered — Dispensed by a GPhC-regulated pharmacy and delivered to your door, typically within 2-3 working days.

Advantages

  • No waiting list — same-day assessment
  • Choice of Wegovy or Mounjaro
  • Lower BMI threshold (30+, or 27+ with conditions)
  • No fixed treatment time limit
  • Available nationwide

Limitations

  • Monthly cost (from GBP 99.97)
  • Support level varies by clinic
  • Not integrated with NHS records by default
  • You need to inform your GP separately

The Postcode Lottery

NHS access to GLP-1 treatments varies significantly across England. Each Integrated Care System (ICS) commissions its own specialist weight management services, and provision is uneven.

  • Some areas have well-established Tier 3 specialist services with relatively short waits
  • Others have limited or no specialist weight management provision
  • Some ICS areas have paused new referrals due to capacity or funding constraints
  • The situation is changing — NHS England is expanding access, but progress varies

What to ask your GP

"Is there a specialist weight management service in our area? What's the current waiting time for a referral? Can I be referred for Wegovy under NICE TA875?" Your GP will know what's available locally and can explain your options.

Which Route Is Right for You?

NHS may be best if...

  • You meet NICE criteria (BMI 35+, or 32.5+ with comorbidity)
  • Cost is a significant factor
  • You have a specialist weight management service with reasonable waiting times in your area
  • You want the multi-disciplinary support (dietitian, psychologist) that specialist services provide
  • You're happy to start with Wegovy (the only NICE-approved option)

Private may be best if...

  • You want to start treatment quickly (no waiting list)
  • Your BMI is between 27-35 (below NHS threshold but eligible privately)
  • You want the option to try Mounjaro (not available on NHS for weight loss)
  • There's no specialist service or long waiting lists in your area
  • You can afford the monthly cost

You can do both

Many people start with a private clinic for immediate access while asking their GP about an NHS referral. If NHS treatment becomes available, you can transition. Just make sure both your GP and private prescriber know about all medications you're taking.

Frequently Asked Questions

Can I get Wegovy for free on the NHS?
Yes, if you meet NICE criteria (TA875). You need a BMI of 35+ (or 32.5+ for some ethnic groups), at least one weight-related health condition, and a referral through a specialist weight management service. Treatment is free at point of use but limited to 2 years. Availability varies by area.
How long is the NHS waiting list for weight loss treatment?
Waiting times vary significantly by area. Some Integrated Care Systems have well-established specialist weight management services with waits of a few months. Others have very limited provision or no specialist service at all. Your GP can tell you what's available in your area.
Can I use the NHS and private treatment at the same time?
You should not take GLP-1 treatments from two different sources simultaneously. However, you can start with a private clinic while waiting for NHS access, or switch from private to NHS if you become eligible and a service is available. Always inform both your GP and private prescriber about any medications you're taking.
Is Mounjaro available on the NHS for weight loss?
Not currently. Mounjaro (tirzepatide) is only NICE-approved for type 2 diabetes, not weight management. Until NICE completes its appraisal for the weight management indication, Mounjaro for weight loss is only available through private clinics as an off-label prescription.
Can I switch from private to NHS or vice versa?
Yes. If you start privately and later qualify for NHS treatment, you can transition with your GP's support. Similarly, if you're on an NHS waiting list and want to start sooner, you can begin with a private clinic. Your medical records will help ensure continuity of care.

Ready to compare your options?

Check your eligibility, compare clinic prices, or learn more about each treatment.

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Sources

  • NICE Technology Appraisal TA875: Semaglutide for managing overweight and obesity (June 2023)
  • NHS England — Specialist weight management services commissioning guidance
  • NHS — Obesity: identification, assessment and management (CG189)
  • Care Quality Commission — Register of regulated providers