Clear aligners cost in the UK depends on case severity. Mild cases usually cost less because they need fewer aligners and shorter timelines, while complex cases cost more due to bite correction and longer treatment.

Smileie severity-based pricing (UK):

• Mild: £1,299 (Single Arch) / £1,799 (Dual Arch)

• Moderate: £2,299 (Dual Arch)

• Complex: £2,899 (Dual Arch) 

To confirm your severity, start with a Free e-consultation, then get a 3D scan and a personalised 3D treatment plan preview before starting.

If you’re researching clear aligners cost UK, the most important thing to understand is that pricing usually depends on severity, not just the brand name. “Mild” cases typically need fewer aligners and a shorter plan, while “complex” cases can require longer treatment, more refinements, and closer monitoring.

At Smileie, the process starts the right way: book a Free e-consultation, speak with our team, and then our dental partners help you get set up at a nearby clinic for a 3D dental scan. From there, you’ll receive a personalised 3D treatment plan preview (so you can see how your smile could look), and only then do you decide whether to proceed

What “severity” really means (and why it changes cost)

When people search for clear aligners cost UK, they’re often comparing prices without comparing the case type. Severity generally reflects:

• How many teeth are crowded/rotated

• Whether bite correction is needed (overbite/underbite/crossbite tendencies)

• How long treatment may take

• How likely refinements are (extra aligners to fine-tune the result)

That’s why clear aligners price UK varies widely across providers, and why quotes online can feel confusing.

Mild cases: best for small alignment tweaks

A mild case often means minor crowding or spacing, typically a handful of teeth, and usually doesn’t require bite correction.

On Smileie’s pricing page, Mild is described as crowding on 3–4 teeth, with up to 4 months of treatment time, and no bite correction

Typical mild costs (Smileie)

• Single Arch: £1,299 or from £54/month 

• Dual Arch: £1,799 or from £75/month 

If you’re comparing aligners cost for mild cases, this is usually where you’ll see the lowest entry point, because the plan is shorter and simpler. For many people, the teeth aligners cost here feels more predictable because you’re not paying for extensive bite movements.

Moderate cases: more teeth involved and bite correction is common

Moderate cases often involve more noticeable crowding/rotation and may include bite correction. That extra complexity can increase total aligner stages and monitoring needs, so clear aligners cost in the UK typically jumps here.

Smileie’s Moderate plan is described as crowding on 6–8 teeth, bite correction: yes, and 4–6 months treatment time. 

Typical moderate costs (Smileie)

• Dual Arch: £2,299 or from £96/month 

If you’re weighing clear aligners price UK for moderate cases, focus on what’s included: monitoring, treatment planning, and the support structure if you need adjustments. This is also the point where comparing aligners cost purely on a headline number can be misleading, because the best value is usually in the overall plan quality and follow-through.

• See how the treatment is planned

• Why people choose Smileie

Complex cases: longer treatment and more comprehensive movements

Complex cases often involve generalised crowding, bite correction, and longer timelines. This is where the teeth aligners cost can increase the most, because more aligners, more checks, and potential refinements are common.

Smileie’s Complex plan includes generalised crowding, bite correction: yes, and 6+ months of treatment time. 

Typical complex costs (Smileie)

• Dual Arch: £2,899 or from £121/month

When someone searches clear aligners cost UK for complex needs, it’s smart to look at severity-based pricing like this because it reflects real treatment planning instead of a one-size-fits-all quote.

How Smileie keeps pricing aligned with your actual case

If you’re serious about choosing the right option (and not overpaying), the best approach is to confirm your severity first, before comparing clear aligners price UK across brands.

Smileie’s journey is designed around that:

1. Free e-consultation (get answers and eligibility guidance) 

2. Nearest clinic 3D scan setup via dental partners

3. 3D treatment plan preview before you commit

4. Start treatment only when you’re confident in the plan

This helps ensure your aligners cost matches the correction you actually need, and your teeth aligners cost reflects a structured, dentist-led path rather than guesswork.

Quick UK market reality check: why online prices vary so much

Across the broader UK market, severity-based ranges can vary widely (especially for in-clinic options). As one reference point, typical ranges are often quoted around £1,350–£3,500 (mild), £2,500–£4,000 (moderate), and £3,500–£8,000 (complex) depending on provider and treatment scope.
That’s exactly why people keep searching clear aligners cost UK, because the gap can be huge.

Conclusion: choose by severity, not hype

The most reliable way to evaluate clear aligners cost UK is to match your plan to your case severity, mild, moderate, or complex, then compare what’s included, how your plan is supervised, and how confident you feel before starting.

Ready to take the first step? Get started with Smileie and book your Free e-consultation to understand your options, get matched to a nearby clinic for a 3D scan, and see your smile preview before you commit.

FAQs

1. How much do clear aligners cost in the UK for mild crowding?
   Mild cases are usually the lowest cost because they require fewer aligners and shorter timelines. Smileie’s mild plans start at £1,299 for Single Arch or £1,799 for Dual Arch.
   

2. What makes moderate clear aligner treatment more expensive?
   Moderate cases often involve more teeth (e.g., crowding across 6–8 teeth) and bite correction, which can increase aligner stages and monitoring.
   

3. How do I know if my case is mild, moderate, or complex?
   The most accurate way is to get assessed and reviewed with a 3D scan and treatment plan preview, Smileie starts with a Free e-consultation and then sets up scans with dental partners.
   

4. Is Invisalign always more expensive than other clear aligners in the UK?
   Often, yes, but pricing depends on severity, clinic fees, and what’s included. UK ranges can vary widely by provider.
   

5. Do clear aligners cost more if bite correction is needed?
   Usually, yes. Bite correction can increase treatment complexity and duration (Smileie’s moderate and complex plans include bite correction
   

6. Can I pay monthly for teeth aligners in the UK?
   Many providers offer instalments. Smileie lists monthly options across severity-based plans
   

7. What’s the best way to compare clear aligners price UK between brands?
   Compare severity match, treatment length, supervision/monitoring, and what’s included, not just the headline number, then confirm with an assessment first.