Updated on March 19, 2024
17 min read

Invisalign UK Review

NewMouth is reader supported. We may earn a commission if you purchase something using one of our links. Advertising Disclosure.

Key Takeaways

  • Invisalign is an in-office clear aligner treatment that launched in 1998
  • Its clear aligners can straighten crooked teeth in 12 to 18 months
  • The cost of Invisalign treatment in the UK is £1,500 to £5,500
  • It can treat mild to severe teeth misalignments and some issues with bite
  • Invisalign offers personalised treatments for children, teenagers, and adults
  • It’s partnered with many UK dentists and orthodontists to oversee treatments
Invisalign Product Shot

Invisalign is one of the most trusted clear aligner brands in the UK. Since it came out in 1998, the company has treated over 15 million people worldwide through its dental partners.1

Many users say it worked for them, but some weren’t satisfied with the results. So we tried Invisalign aligners to see if there was any truth to these claims.

Our team also reviewed dozens of customer feedbacks on Trustpilot UK and Consumer Affairs. We compared them with our insights on the brand (both good and bad).

Why Trust Our Invisalign Review?

We have a dedicated team of medical writers, expert researchers, licensed dental professionals, and medical reviewers who curate and approve content for NewMouth.

Before publishing this article, our team:

  • Spent 80+ hours researching the Invisalign treatment process
  • Scanned over 100+ customer reviews on Invisalign UK
  • Consulted dental professionals and industry experts
  • Reviewed 20+ studies on the safety and effectiveness of invisible aligners
  • Had our writers try Invisalign treatment from start to finish
  • Compared Invisalign to other at-home and in-office treatments we tried
  • Asked in-house dentists to fact-check our review for accuracy

Pros & Cons of Invisalign UK

Many of our experiences with Invisalign matched up with what people say about it online. We used these reviews as a baseline and gave Invisalign a 4-star rating in five categories:

1. Overall Rating:
2. Treatment process:
3. Pricing and financing:
4. Customer service and aftersales support:
5. Brand reputation:

Below are some Invisalign reviews and a summary of its pros and cons.

Invisalign Pros

I love the quality service and the treatment received and most importantly the amazing transformation of my smile. Well worth it and I would definitely recommend Invisalign.

Invisalign Review on Sensu
  • It’s an effective treatment. Most people who tried Invisalign say it either improved the appearance of their smile or resolved their teeth alignment issues.
  • Your treatment may be shorter than expected. Many customers reported faster treatment times and visible results within 6 months of starting.
  • Dental insurance may cover its costs. Depending on your insurer and its policies, they could help pay for the cost of your Invisalign treatment—either partially or in full.
  • Many Invisalign providers offer flexible payment options. This allows you to divide the treatment cost into affordable monthly installments.
  • It’s comfortable and discreet. Invisalign aligners feel snug, have little to no impact on speech and daily activities, and are barely visible when worn.
  • It’s easier to use and maintain. Unlike traditional metal braces, you can remove Invisalign aligners when you eat, brush, or floss your teeth.
  • Treatment plans are personalised. Your provider will customise your Invisalign journey from start to finish. They may offer adjustments and refinement aligners if needed.
  • It requires fewer appointments than metal braces. This makes it a more convenient option for those who want to get their lower and upper teeth straightened.

Invisalign Cons

[The] appearance of my teeth has improved, but it hasn’t sorted the overbite which… I wanted treatment [for]… When queried, [I] was told it would settle. Twelve months later [and it still] hasn’t. I wish I’d have had fixed braces instead.

Invisalign Review on Trustpilot

  • It lacks transparency when it comes to cost. Additional fees may apply if you extend your treatment, switch providers, or request to replace your aligners or retainers.
  • Prices vary across providers. Each Invisalign provider has a unique pricing structure, financing options, insurance partners, and treatment policies that affect the overall cost.
  • The quality of its products is inconsistent. You may get ill-fitting clear aligners or retainers that can cause cuts and discomfort or break easily.
  • Getting help can be difficult. Many people receive late responses or unhelpful information from Invisalign’s customer support and their local providers.
  • It has different effects on people’s teeth. It depends on your compliance and the skill of your assigned dentist or orthodontist. Treatments may also last longer than expected. 
  • It isn’t covered by the NHS. If you want to cut on treatment costs, you’ll need an insurance plan with qualifying dental coverage.
  • Its treatments aren’t accessible to everyone in the UK. This depends on the availability of providers in your area and which treatment options they offer.
  • The cases it can treat are limited. While it can treat more teeth misalignments (malocclusions) than at-home clear aligners, it can’t fix as many issues as braces.

Who is Invisalign For?

Invisalign is for people who want straighter teeth. The company offers treatments for adults, children aged 6 to 10 years, and teenagers with their full set of adult teeth.

It can treat most mild, moderate, and severe teeth misalignments. Invisalign can also correct some bite issues. Among the cases it can treat are:

How Long Does Invisalign Take To Work?

Most Invisalign treatments last 12 to 18 months. The actual time it takes to complete your treatment will depend on your compliance and the complexity of your case.

Below are some estimates of average treatment times based on your condition:

  • Mild teeth misalignment 3 to 6 months
  • Moderate teeth misalignment 6 to 12 months
  • Severe teeth misalignment 12 to 18 months

However, you don’t have to wait this long to see visible changes. You’ll notice changes within weeks or months of starting your clear aligner treatment.

How Much Does Invisalign Cost in the UK?

The cost of Invisalign in the United Kingdom ranges from £1,500 to £5,500. 

Prices primarily depend on the type of treatment you’re getting. Invisalign offers treatments based on your age, the severity of your condition, and the number of aligners needed.2

Invisalign costs in the UK may also vary depending on the provider and your location. To give you an estimate, we checked with various dental practices in the UK. 

Here are the average prices of Invisalign treatments in the UK as of 2024:

Treatment OptionsAverage Treatment CostCandidatesTreatable CasesNumber of Aligners
Invisalign Express 5£1,500Adults and teenagersVery mild to mildUp to 5 trays
Invisalign Express Package£1,500 to £2,500Adults and teenagersVery mild to mildUp to 7 trays
Invisalign Lite Package£2,500 to £3,200Adults and teenagersMild to moderateUp to 14 trays
Invisalign Moderate Package£3,300 to £4,000Adult and teenagersMild to moderateUp to 20 trays
Invisalign Comprehensive£3,700 to £5,500Adults and teenagersModerate to severeUnlimited
Invisalign First Package£1,500 to £3,500Growing childrenWide range of malocclusionsUnlimited for 18 months

Many UK dentists and orthodontists offer payment plans to help you finance your treatment. Each provider will have different options available, such as:

  • In-house payments — Pay a fixed cost at different stages of the treatment. Any remaining remaining balance is divided into affordable monthly payments.
  • Payment terms — Pay the agreed monthly costs (such as £85 to £325 per month) until you fully cover your treatment costs.
  • Interest rates — Choose from zero-interest and low-interest payment plans.

Some Invisalign providers offer discounts if you pay for your entire treatment upfront. It can help you cut costs on your Invisalign treatment.

Can You Get Invisalign on the NHS?

No. Invisalign treatments aren’t typically covered by the National Health Service (NHS). However, some people get approved on a case-by-case basis.

The NHS only covers dental treatments that have been prescribed for health reasons. Unfortunately, Invisalign is generally considered a cosmetic treatment.

If you do request to be covered, the NHS will use the Index of Orthodontic Treatment Need (IOTN) to grade your case on a scale of 1 to 5. It will help them determine your coverage:

  • Grade 1 to 2 — Invisalign treatments aren’t covered
  • Grade 3 — Your treatment may or may not be covered
  • Grade 4 to 5 — Treatments are usually covered

How Invisalign Works

Here’s a step-by-step of our Invisalign experience so you know what to expect:

Step 1: Consult an Invisalign provider

First, you need to book an in-person consultation with an Invisalign provider in your area. These are UK-registered dentists or orthodontists who have partnered with Invisalign.

It’s usually a free consultation. However, some providers may charge a small fee.


During this initial consultation, your provider will evaluate your teeth to see if you’re a good fit for Invisalign. If you qualify, they will lay out your treatment plan, including:

  • Which treatment they recommend (e.g., Invisalign Lite or Express)
  • How many Invisalign aligners you’ll need for the treatment (e.g., 14 trays)
  • How long your treatment will last and how much it will cost you

From here, you can decide whether to continue with treatment or not. This would be a good time to ask questions about financing options and accepted insurance.

Keep in mind that your Invisalign doctor may adjust your treatment time and suggest additional refinements on top of your initial treatment. It all depends on how your teeth move along.

If you have poor oral health or other dental problems preventing you from qualifying, you may need additional treatments. Your provider may offer these services.

Step 2: Review your Invisalign treatment plan

Once you agree to the treatment, your provider will take intra-oral scans (or teeth scans from inside your mouth). They’ll use a tool called the iTero Element Scanner.

Digital teeth scanning is a fast, convenient, and mess-free alternative to taking dental impressions on your own. It provides an accurate 360-degree view of your teeth.

This helps them create an accurate treatment plan and well-fitted aligners.

For this step, your provider will gently probe the scanning tool inside your mouth. The device will take high-resolution images of your teeth from different angles.

The images are used to create a 3D model of your teeth within minutes. Your provider will then design your treatment plan using a program called ClinCheck.

They’ll show you before-and-after images of what your teeth may look like. This includes the step-by-step changes your teeth will undergo as you switch from one aligner to the next.

You can review your treatment plan, request changes, and approve it. After approving the plan, your provider will have your custom-fit aligners made.

Step 3: Wear your prescribed Invisalign aligners

Invisalign will ship your custom aligners in sets and not all at once. Your dentist or orthodontist should receive the first set within 3 to 4 weeks, though it can take longer.

When your clear aligners arrive, your provider will schedule a fitting appointment. They’ll ensure it fits your teeth before sending you home with the rest of your aligners.

Your provider will give you instructions on their proper usage, such as:

  • Wearing your Invisalign aligners for at least 22 hours a day
  • Removing your aligners when eating or drinking hot beverages
  • Flossing and brushing your teeth in between
  • Caring for your invisible aligners

It’s important that you wear your aligners as prescribed so the treatment will work. Your teeth and gums may feel sore at the beginning. The pain should go away after a few days.

Step 4: Check in with your Invisalign doctor

You have to visit your provider every 4 to 6 weeks so they can watch your treatment progress. This is also when you’ll be picking up your next set of aligners.

The dentist or orthodontist could adjust your treatment during a follow-up appointment. They might tell you to switch to your next aligner sooner or ask you to wait a few more weeks.

Your provider may also perform procedures that encourage teeth movement, such as:

  • Adding SmartForce attachments to your teeth — To increase the force of your aligners without attracting unwanted attention (they’re small and barely visible)
  • Shaving certain teeth (interproximal reduction or IPR) — To create spaces in between, giving your teeth enough room to move throughout the aligner treatment

Step 5: Finish your Invisalign treatment

You and your doctor will work together on your final appointment to evaluate your final results. They will see if you’ve achieved your smile goals.

Those who don’t like their results may opt to get more clear aligners and refinements until they’re satisfied. However, this will cost you and extend your treatment time.

Patients who are satisfied with the treatment may proceed with wearing Vivera retainers. These retainers will keep your teeth straight and help you maintain that perfect smile.

A retainer prevents your teeth from moving back into their original positions.

Invisalign vs. Other Clear Aligners in the UK

Invisalign may be the best in-office clear aligner in the UK, but it isn’t your only option. You can also choose from at-home aligners and hybrid treatments.

Below are the key differences between Invisalign and its alternatives:

FeaturesIn-Office Clear Aligner TreatmentAt-Home Clear Aligner TreatmentHybrid Clear Aligner Treatment
Treatable casesMild to severeMild to moderateMild to severe
Treatment costs£1,500 to £5,500£1,500 to £1,700£1,700 to £4,000
Treatment times12 to 18 months4 to 10 months2 to 12 months
Starting treatmentIn-personAt-homeAt-home or in-person
Progress monitoringIn-personRemoteIn-person and remote

At-home teeth aligners are the cheapest and most convenient Invisalign alternatives in the UK. They allow you to begin and complete the whole process at home.

Everything will be delivered to you, from the impression kit to your clear aligner kits. Your treatment will be monitored remotely by dental professionals via an app.

Here are the top at-home aligners in the UK:

Hybrid treatments offer the convenience of at-home teeth straightening and the professional care afforded by in-office treatments such as Invisalign.

Depending on the brand, you can begin your treatment at home or with a consultation. They typically require fewer dental visits, which can be combined with remote monitoring.

The best hybrid aligner treatments in the UK are:

Invisalign vs. NewSmile

NewSmile is our top pick for at-home aligner treatment in the UK. Its aligners use the same high-quality material as Invisalign but don’t include the expensive price tag.

While most brands offer straight-cut aligners, NewSmile aligners are scallop-shaped. They’re more comfortable, barely noticeable, and less likely to irritate your gums.

NewSmile has daytime and night-only aligners that cost £1,595 to £1,695. It can treat people with mild to moderately crooked teeth in 4 to 10 months.

Invisalign vs. Straight My Teeth

Straight My Teeth is the cheapest clear aligner treatment in the United Kingdom. You can purchase it for £999 if you visit the physical Smile Studio location or £1,199 if you buy it online.

Treatment costs include free retainers and free replacements for ill-fitting aligners. You’ll also get a free teeth whitening kit if you visit the Straight My Teeth Smile Studio in Staines.

Straight My Teeth also has affordable retainers. You can get a pair for as little as £49. This allows you to keep your new smile for a reasonable price.

Notice: According to the Straight My Teeth website, the company isn’t accepting orders at the moment. There is no official statement on its current status and future direction. But you can take a free online assessment and they’ll let you know if they’re taking orders once again. This review was last updated on December 30, 2023.

Invisalign vs. Smile White

Smile White is a great option if you’re after specific results. You can straighten only your upper or lower teeth (single arch) or both (dual arch).

Smile White uses the same high-grade plastic as Invisalign for its aligners. However, its affordable treatments make it a better alternative.

Smile White can straighten teeth in as little as 2 to 7 months, faster than most invisible aligners in the UK. It costs £1,695 to £3,695.

Use code NMSMILE for 5% Off

Invisalign vs. Dr. Smile

Dr. Smile (formerly PlusDent) can correct most teeth misalignments for a lower price than braces and in-office brands like Invisalign.

If your results don’t match your custom treatment plan, the company may cover the cost of any additional aligners you’ll need to get straighter teeth.

Dr. Smile has a treatment time of 6 to 12 months. Treatments may cost you anywhere from £1,390 to £2,090.

Read our full review of Dr. Smile

Invisalign vs. Straight Teeth Direct

Straight Teeth Direct gives you the flexibility to choose a payment option that best fits your budget.

You can pay for your treatment upfront. Alternatively, you can use financing and split the cost of your treatment into monthly installments.

The available payment plans have low interest rates and require little to no deposit. This makes the aligner treatment easily accessible.

Even without financing, Straight Teeth Direct offers affordable treatments.

Straight My Teeth has daytime aligners that can treat minor teeth alignment problems in 6 to 8 months. The cost for treatment is £1,650.

Read our full review of Straight Teeth Direct

Invisalign vs. SmileDirectClub (SDC)

SmileDirectClub is a brand of at-home clear aligners. 

The company announced its bankruptcy liquidation on September 2023, ceasing aligner treatments and ending its lifetime guarantee. 

Its global operations closed on December 2023 after failing to secure the funds needed to buy itself out of bankruptcy. 

How this affects you will depend on which stage of the treatment process you’re in. You can read our customer guide for SmileDirectClub UK.

Our Invisalign Rating

invisalign logo 1x
Overall user experience
Treatment process
Pricing and financing
Customer service and aftersales support
Brand reputation

Invisalign is our top choice for in-office teeth straightening. The brand has many dental partners across the UK and provides comprehensive orthodontic care.

It has treatments for children, teenagers, and adults with crooked teeth. Unlike most clear aligner brands, it can treat a wider range of teeth misalignments and bite problems.

People usually opt for Invisalign because it’s removable and discreet. There are no metal brackets or wires—just plastic dental trays that you wear on your upper and bottom teeth.

Many providers offer financing and accept insurance to help you save on treatment costs. But it’s an expensive option (you can get clear braces for about the same price).

If you have minor teeth misalignment, there are cheaper alternatives in the UK.

How We Rated Invisalign UK

We had in-house writers undergo Invisalign treatment. While testing its clear aligners, our team assessed and scored them based on five traits:

Overall user experience
Treatment process
Pricing and Financing
Customer Service and After-Sales Support
Brand Reputation

Each trait was assigned a “weight” so we could calculate their individual rating and weighted average scores on a scale of five. Here is how we rated Invisalign UK:

Customer Experience

Using artificial intelligence, we gathered and analyzed feedback from hundreds of people who tried Invisalign. This helped us determine the users’ experiences with a brand, including:

  • Its availability for in-person and/or virtual consultations
  • The accessibility of its clear aligners and ease of ordering
  • Whether it gives clear instructions for taking dental impressions 
  • The fit and comfort of its invisible braces when worn


We compared Invisalign’s average treatment times and effectiveness for correcting teeth misalignments.

Our team also examined it for any products or services they provided that would help customers during and after their treatment, such as:

  • Access to dental experts who can answer your questions and guide you throughout your treatment
  • A dedicated app that reminds users to switch aligners and allows them to conveniently track their progress and contact support
  • Regular virtual and/or in-person check-ins with a dental professional who can ensure that your treatment is going well
  • Additional dental treatments, such as teeth whitening

Pricing and Financing

We explored the total treatment cost of Invisalign UK, including their upfront prices, flexibility of payment options, eligibility for insurance, and maintenance costs for additional retainers.

Customer Service and After-Sales Support

Our team investigated Invisalign’s customer support in-depth when answering queries and resolving issues. We assessed their:

  • Availability
  • Responsiveness
  • Knowledge
  • Reliability
  • Friendliness

We also checked Invisalign’s offered guarantees for clear aligner adjustments, refinements, replacements, or refunds if you’re not qualified or if the treatment doesn’t work for you.

Brand Reputation

With the help of advanced AI algorithms, we sorted through thousands of customer reviews that would indicate the level of trust in Invisalign.

Last updated on March 19, 2024
9 Sources Cited
Last updated on March 19, 2024
All NewMouth content is medically reviewed and fact-checked by a licensed dentist or orthodontist to ensure the information is factual, current, and relevant.

We have strict sourcing guidelines and only cite from current scientific research, such as scholarly articles, dentistry textbooks, government agencies, and medical journals. This also includes information provided by the American Dental Association (ADA), the American Association of Orthodontics (AAO), and the American Academy of Pediatrics (AAP).
  1. Invisalign® before and after patient stories.” Invisalign EU.
  2. Invisalign® Product Portfolio.” Align Tech.  
  3. INVISALIGN COMPREHENSIVE.” Baker Street Dental.
  4. Clear aligners.” British Orthodontic Society.
  5. Invisalign Cost.” Dental Clinic London.
  6. A comparison of treatment effectiveness between clear aligner and fixed appliance therapies.” National Center for Biotechnology Information.
  7. Clinical Limitations of Invisalign.” Journal of the Canadian Dental Association.
  8. Orthodontics. National Health Service.
  9. Is Invisalign available through the NHS?” Sensu London.
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram