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By Joanna M. | Director of Telehealth Clinical Operations | Fact-Checked for Clinical Accuracy
If you were an SDC customer in the UK, you already know the frustration: SmileDirectClub ceased operations, leaving thousands of people needing retainers or simply somewhere to turn. The good news is that the UK market for direct-to-consumer retainers has matured considerably, and you now have several strong alternatives — with different trade-offs on price, turnaround, and quality.
This guide breaks down the best SmileDirectClub UK alternatives in 2026, what SDC customers specifically need to know, and which option is genuinely worth it.
SmileDirectClub filed for bankruptcy in the United States in September 2023 and shut down all global operations, including its UK business, almost immediately thereafter. The closures were abrupt — SmileShop locations shuttered overnight, and customers who had paid for treatment packages or retainers found themselves without recourse or replacement product.
The core issue was a business model that required massive capital outlay for physical SmileShop locations while simultaneously fighting a reputational battle with dental professional bodies over remote-only orthodontic care. When capital dried up, operations collapsed.
What this means for former SDC UK customers:
NewSmile offers custom Essix (clear plastic) retainers via a home impression kit. You take your own dental impressions, post them to the lab, and receive a custom-made retainer pair. No dentist visit required.
Key facts:
For most former SDC UK customers, NewSmile retainers are the most direct like-for-like replacement. The Essix retainer material is the same type SDC used, the impression process is straightforward, and the price point is competitive for the UK market.
NewSmile also offers custom night guards at £109 per pair — useful if teeth grinding contributed to retainer wear under SDC treatment.
If you were mid-treatment when SDC closed and your teeth have shifted, a direct-to-consumer retainer will not correct the movement. In that case, you need active orthodontic treatment from a registered professional before moving to a retainer.
NHS orthodontic treatment is available for those under 18 with clinical need. For adults, private orthodontists typically charge £1,800–£4,500 for aligner treatment, and will provide retainers as part of the package.
Impress operates physical SmileShops in major UK cities where you receive a 3D intraoral scan rather than using a home impression kit. Their retainer replacement service is available to anyone, not just former Impress treatment customers.
Any GDC-registered dentist in the UK can take impressions and order custom retainers from a dental laboratory. Expect to pay £150–£300+ depending on location. This route is worth considering if your bite has shifted significantly or you prefer in-person consultation.
| Feature | SmileDirectClub UK (now closed) | NewSmile UK (2026) |
|---|---|---|
| Retainer type | Essix clear plastic | Essix clear plastic |
| Intake method | SmileShop scan or home kit | Home impression kit |
| Retainer price (pair) | Varied (subscription model) | £109 |
| Currently operating in UK | No — closed Sep 2023 | Yes |
| Night guard available | No | Yes — £109 |
Check whether your most recent SDC retainer still fits. If it seats fully and comfortably, your teeth have not shifted significantly — you can order a replacement retainer from NewSmile using a home impression kit.
A retainer that no longer seats properly indicates tooth movement. Do not attempt to force it. Book an appointment with a GDC-registered orthodontist or dentist to assess whether retreatment is needed before ordering a new retainer.
Once your bite position is stable (or retreatment is complete), order a custom clear retainer from NewSmile UK for £109 a pair. The home impression kit is posted to you, you take impressions at home, return the kit, and your retainer is manufactured and dispatched.
Replacing your SDC retainer? NewSmile has you covered.
NewSmile's custom Essix retainers are made from the same material as your original SmileDirectClub retainers — from £109 per pair, no subscription required.
Do not use a toothbrush on your clear retainer, as this scratches the plastic and creates grooves where bacteria accumulate. The most effective method is ultrasonic cleaning. The Petal Ultrasonic Cleaner paired with Petal Cleaning Pods removes biofilm, bacteria, and staining in minutes without any physical abrasion.
SDC UK ceased operations abruptly in late 2023 and did not formally transfer patient records. Most former customers have not been able to retrieve their treatment files through official channels. Your best option is a new assessment from a GDC-registered dentist or orthodontist.
Yes — provided your teeth have not shifted since your last SDC retainer was fitted. If there has been significant movement, consult an orthodontist before ordering.
Direct-to-consumer custom Essix retainers in the UK typically range from £79 to £159 per pair. NewSmile UK charges £109 per pair. High street dentist retainers typically cost £150–£300+.
For a straightforward retainer replacement, NewSmile UK is the closest like-for-like alternative — same Essix material, home impression process, and a price of £109 per pair.
No. SmileDirectClub filed for Chapter 7 bankruptcy liquidation in late 2023, meaning the business was wound down permanently. There are no plans to reopen under the SmileDirectClub brand.
Essix-style clear retainers typically last 12–24 months with regular use. Night grinders should also consider a dedicated custom night guard to protect their retainer during sleep.
