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Add up to 3 clear aligner providers in the UK to see them side by side. Details come from our reviews; open a review for sources and the full picture.
| Detail | Smile White | Impress | |
|---|---|---|---|
| Treatment | |||
| ApproachA scan records your teeth; it is not a dental examination. | Dental exam In-person check-ups | Dental exam In-person and remote check-ins | |
| How it startsAn impression kit or a scan records the teeth. Check whether a dentist examines you in person. | A free online consultation, then an oral-health check with X-rays, a 3D scan and photos at a partner dental practice. | A free clinic visit with an examination, a 3D scan and a quote. | |
| Check-ins and monitoring | In person for at least three visits: the check, fitting and removal of attachments. Extra visits are included. | At one of eight Impress clinics in England to start, fit and finish, with photo check-ins in the app between visits. | |
| Who plans and supervises | Your partner dentist, who is GDC-registered. Smile White is owned by two dentists. | A GDC-registered dentist at an Impress or partner clinic. | |
| Cost | |||
| Treatment priceCheck whether a price covers one arch or both, and what it includes. | Set after assessment£1,995 to £3,695 The clinician decides which plan applies after an assessment. For both arches. Refresh, up to four aligners for minor relapse: £995, a limited course rather than full treatment. Checked 26 October 2026 | Set after assessment£1,990 to £3,990 The clinician decides which plan applies after an assessment. The provider does not say whether this covers one arch or both. Checked 26 October 2026 | |
| Aftercare | |||
| Retainers | One set included. A replacement subscription starts at £100 for six months. | Sold separately. Impress's retainer subscription is from £300 a year; another dentist can also make retainers. | |
| RefinementsConditions often apply. The review has the detail. | Included at no extra cost if the dentist says you are clinically eligible. | All the Invisalign aligners you need are included, along with attachments and IPR. | |
| Our review | |||
| Full review | Updated 26 October 2026 Read the Smile White review | Updated 26 October 2026 Read the Impress review |
Add another provider
In alphabetical order. This is not a ranking.
Reviewed but not available to compare
- Diamond Whites Impress acquired Diamond Whites, and new cases are now quoted at an Impress clinic.
- NewSmile Its aligners could not be ordered online when we checked on 27 October 2026: the order button led to a missing page, and the shop listed no aligners.
Who is included. A provider can be compared when we have a current review, new patients can start with it in the UK, and we could confirm how treatment starts and how progress is checked. A missing price never rules a provider out: practice-set fees are shown as practice fees or as a quote. Being listed is not a recommendation.
Providers that have closed, changed or could not be confirmed are listed under Looking for another provider? on the reviews page. Prices and terms change, so confirm them with the provider before you pay.
Not sure where to start? Our guide to the best clear aligners in the UK explains which providers we would look at first, and why.
