How we test and reach a verdict
We're an independent consumer-health watchdog. We don't sell, we don't take a cut, and we don't run sponsored reviews. Here's exactly how we judge a category, weigh the evidence, and decide what's worth your money.
Our method, step by step
Every category guide follows the same five-stage process. We test categories and what to look for — never named products dressed up as a recommendation.
1. Frame the category
We start with who actually uses the product and why — a person managing blood pressure at home, a carer choosing a rollator, a family setting up enteral feeding. We map the real-world job before we look at a single spec sheet.
2. Set the criteria up front
We agree the test criteria before reviewing anything, so the conclusion can't be reverse-engineered to suit a brand. Criteria are weighted by what matters most: clinical accuracy and safety first, then ease of use, durability, clarity of instructions and value.
3. Gather the evidence
We lean on independent, reputable UK and international sources — NHS, NICE, MHRA, SACN, the British & Irish Hypertension Society, and validation registers — alongside published lab validations and hands-on usability checks. We record where every claim comes from.
4. Score and stress-test
We rate each criterion, then deliberately argue the other side: where might this fail an older user, a shaky hand, a small kitchen, a tight budget? A high spec that's unusable in practice loses marks.
5. Write a plain-English verdict
We translate the scores into a clear category verdict — what it's best for, what to watch out for, and when to talk to a pharmacist or GP first. No jargon, no hype.
This is an example, not a real product review — it shows the format you'll see across our category guides. A validated upper-arm blood pressure monitor scores well: clinically tested to ISO 15197 and listed on the British & Irish Hypertension Society register, simple one-button operation, and a clear, well-sized display. It loses half a star where cuff sizing is fiddly and the manual is dense.
Adults monitoring blood pressure at home who want results they — and their GP — can trust.
Always check the device is on the BIHS validated list and that the cuff fits your arm; an ill-fitting cuff gives misleading readings whatever the brand.
We rate each category out of five. Broadly: 4.0–5.0 — recommended, meets the standards that matter (e.g. ISO 15197 validation, UKCA/CE marking, MHRA registration for medical devices). 2.5–3.9 — fine with caveats; check the 'watch out' note before buying. Below 2.5 — we'd steer you elsewhere. It's the same logic behind a respected watchdog 'Don't Buy', which is typically triggered when a product scores under about 45% overall. A rating is guidance for an informed choice — it is not medical advice.
The criteria behind every verdict
These are the boxes we check before we'll call something worth your money. Use them yourself, too — they work whether or not we've reviewed your exact category.
Clinically validated
For health-measurement devices, look for validation to a recognised protocol (ISO 15197 / ESH / BIHS) and, for blood pressure, listing on the British & Irish Hypertension Society register.
Properly regulated
Medical devices sold in Great Britain should carry UKCA or (during transition) CE marking and be registered with the MHRA. Class IIa devices like home BP and glucose monitors require independent conformity assessment.
Genuinely usable
Big enough display, sensible button layout, clear instructions, and a fit that works for older hands and varied arm or body sizes. A spec means nothing if people can't use it correctly.
Honest about its limits
We mark up products that signpost when to see a pharmacist or GP, and mark down those that imply a gadget replaces professional care or diagnosis.
Built to last and supported
Durability, replaceable parts (cuffs, filters, batteries), warranty and accessible support — value is lifetime cost, not the launch price.
No hidden strings
We disregard marketing claims we can't verify and ignore sponsored 'awards'. Our verdict answers one question only: is this a sensible choice for the reader?
Your questions about our method
Do you take money from the brands you review?
No. We take no fee, commission or affiliate cut to influence a verdict, and we don't run paid placements. Our independence is the whole point — it's the model that lets a watchdog issue an honest 'we'd steer you elsewhere'.
Why do you review categories instead of naming specific products?
Named 'best buy' lists date quickly and nudge people toward a single purchase. We'd rather teach you what to look for — the criteria, the validation marks, the trade-offs — so you can judge any product, including ones we've never seen.
Is this medical advice?
No. Our guides are educational and help you make an informed choice. For anything about your own health, medication or symptoms, speak to your GP, NHS 111 or a pharmacist — we'll always point you to them and to official sources like NICE, the MHRA and the NHS.
How do I know a home monitor is accurate?
For blood pressure, check it's on the British & Irish Hypertension Society validated list and validated to ISO 15197 or an ESH protocol. Fit matters too: the wrong cuff size, or a wrist device used incorrectly, can skew readings on any model.
What if you get something wrong?
We publish corrections. If you spot an error or out-of-date figure, tell us — see our editorial standards for how we handle accuracy and updates.
Choose with confidence, not guesswork
Now you know how we reach a verdict, put it to work. Our category guides walk you through what to look for in monitors, supplements, mobility aids and home-care kit — no hype, no hard sell.