Compare providers
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 | Impress | Smileie | |
|---|---|---|---|
| Treatment | |||
| ApproachA scan records your teeth; it is not a dental examination. | Dental exam In-person and remote check-ins | 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 clinic visit with an examination, a 3D scan and a quote. | Online screening, then an in-person examination at one of 23 partner locations listed on its website. | |
| Check-ins and monitoring | At one of eight Impress clinics in England to start, fit and finish, with photo check-ins in the app between visits. | In person before aligners are prescribed. Later check-ins can be remote. | |
| Who plans and supervises | A GDC-registered dentist at an Impress or partner clinic. | The examining dentist at the partner practice is responsible for your clinical care. | |
| Cost | |||
| Treatment priceCheck whether a price covers one arch or both, and what it includes. | 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 | Set after examination£1,599 to £2,899 Both-arch packages run from £1,599 (homepage, mild) to £2,899 (complex). For a mild case Smileie's pages show £1,599, £1,799 or £1,899; confirm the total after the examination. Checked 27 October 2026 | |
| Aftercare | |||
| Retainers | Sold separately. Impress's retainer subscription is from £300 a year; another dentist can also make retainers. | Two retainer sets are listed with both packages. | |
| RefinementsConditions often apply. The review has the detail. | All the Invisalign aligners you need are included, along with attachments and IPR. | Further aligners may be offered if the dentist considers them clinically appropriate and the package terms are met. | |
| Our review | |||
| Full review | Updated 26 October 2026 Read the Impress review | Updated 26 October 2026 Read the Smileie 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.
