The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
Free tracker included with every download this week
Weight Loss Support in Harrow — Your NHS & Private Options
If you're looking for weight loss support in Harrow, you have several options available through both the NHS and private healthcare providers. Whether you want to explore lifestyle changes, prescription weight loss medication, or specialist services, Harrow residents can access evidence-based weight management through local services. This guide covers what's available locally and how to get started with weight management in the UK.
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Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
NHS Weight Management Services in Harrow
Harrow falls within the North West London Integrated Care Board (ICB), which provides access to NHS weight management services through a tiered approach. Start by speaking to your GP, who can assess your weight and health, discuss lifestyle changes, and refer you to appropriate services if needed.
- Tier 1: Self-help and digital tools (like our free BMI calculator above) plus community weight loss programmes
- Tier 2: Primary care-led behaviour change support and dietary advice
- Tier 3: Specialist multidisciplinary weight management services — where prescription medications like Mounjaro (tirzepatide) or Wegovy (semaglutide) may be considered
- Tier 4: Bariatric surgery assessment for severe obesity
Access to NHS specialist weight loss medication varies by ICB and local waiting times. Harrow residents may experience waiting lists of several months to access tier 3 services. Ask your GP about current eligibility and waiting times in your area.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Private Weight Loss Options & GLP-1 Medications
If you prefer faster access or don't meet NHS criteria yet, private prescription weight loss medication is available in the UK through licensed online prescribers. GLP-1 medications like Wegovy (semaglutide) and dual GIP/GLP-1 medications like Mounjaro may help support weight loss when combined with lifestyle changes. These are prescription-only and require a clinical assessment to determine suitability.
Our GLP-1 weight loss calculator can help you understand potential outcomes at different doses based on clinical trial data. Costs for private treatment typically range from £129–£320 per month depending on the medication and dose. All prescriptions must come from a UK-licensed prescriber, and medications are dispensed by regulated pharmacies.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
How do I access NHS weight loss support in Harrow?
Contact your GP first — they can assess your health, discuss lifestyle changes, and refer you to NHS tier 2 or tier 3 weight management services if appropriate. Your GP will consider your BMI, health conditions, and local service availability. Waiting times vary; ask your GP about current timescales in the North West London ICB.
What prescription weight loss medications are available in the UK?
Mounjaro (tirzepatide) and Wegovy (semaglutide) are the main GLP-1/GIP medications licensed for weight management. Both are prescription-only and require clinical assessment. Clinical trials showed average weight loss of 15–21% with Mounjaro and approximately 15% with Wegovy, though results vary between individuals.
What's the difference between Ozempic and Wegovy?
Both contain semaglutide, but Ozempic is approved for type 2 diabetes management only — it is NOT licensed for weight loss in the UK. Wegovy is the licensed weight management version at higher doses. Using Ozempic for weight loss is off-label and not recommended.
Can I get weight loss injections through Harrow GP practices?
Most weight loss injections are prescribed through NHS tier 3 specialist services (after GP referral) or privately through online prescribers. Standard GP practices in Harrow do not typically prescribe GLP-1 medications directly — your GP will refer you if you meet tier 3 criteria.
How can I calculate my personal weight loss potential?
Use our free GLP-1 weight loss calculator above to see projected outcomes at different doses based on clinical trial data. You'll also find our BMI calculator and weight converter helpful for tracking your starting point and understanding your healthy weight range for your height.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.