Updated on February 9, 2024
17 min read

Straight Teeth Direct UK Review

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Key Takeaways

  • Straight Teeth Direct launched in 2017 and offers at-home clear aligners
  • It usually treats mild to moderate teeth misalignments in 5 to 9 months
  • Straight Teeth Direct costs £1,650 upfront or up to £2,074 with financing
  • The clear aligner company only has daytime aligners (StraightBox®)
  • The kit includes free retainers and replacements for lost or broken aligners
  • To start treatment, you can get a free in-person scan or buy the impression kit
  • Dentists and orthodontists supervise the whole process from start to finish
  • It provides extra aligners (refinements) if you’re not satisfied with the results
Straight Teeth Direct

Straight Teeth Direct is one of our top picks for clear aligners in the UK. The company first opened its doors in 2017. Now, it delivers at-home aligners to 60+ locations worldwide.

Most people seem happy with the brand. It received an average rating of 4.5⭐ on Trustpilot and Reviews.io. However, some UK residents left negative reviews.

We tested Straight Teeth Direct Club and compared our experiences to what people say about it online. For this review, we considered both positive and negative feedback.

Why Trust Our Straight Teeth Direct 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 review, our team:

  • Spent 95+ hours researching Straight Teeth Direct’s treatment process
  • Scanned 900+ Straight Teeth Direct reviews on Trustpilot and Reviews.io
  • Consulted dental professionals and industry experts in teeth straightening
  • Reviewed 20+ studies on the safety and effectiveness of clear aligners
  • Had our writers try Straight Teeth Direct’s aligners from start to finish
  • Compared Straight Teeth Direct to the top clear aligner treatments in the UK
  • Asked in-house dentists to fact-check our review for accuracy

Pros & Cons of Straight Teeth Direct

We tried Straight Teeth Direct and gave it a final score of 3.7⭐ in five categories:

  1. Overall user experience (3.8⭐)
  2. Treatment process (3.6⭐)
  3. Pricing and financing (3.8⭐)
  4. Customer service and aftersales support (3.8⭐)
  5. Brand reputation (3.7⭐)

Below, we highlighted its pros and cons and some Straight Teeth Direct reviews.

Straight Teeth Direct Pros

I was very insecure with my teeth… Straight Teeth Direct was something that my sister used for her smile and recommended. I cannot describe how happy I am with them. They [were] so easy and straightforward with their process.

Straight Teeth Direct Review on Trustpilot

The staff are so helpful and message you back if you are struggling. My process was for a year, and my teeth are so nicely aligned. I would recommend them 100% to anyone who is insecure with their smile

Straight Teeth Direct Review on Trustpilot

This is a great team of professionals who know their job, don’t waste people’s time, and create a perfect smile. I am also still in contact as I have stayed on the maintainer plan with the retainers.

Straight Teeth Direct Review on Trustpilot
  • It’s effective for teeth straightening. Most customers are happy with the outcome and fast results. For many, the treatment gave them the teeth they had always wanted.
  • It’s an affordable option. Many people chose Straight Teeth Direct because it’s cheaper than Invisalign and braces. Treatment costs also include free retainers.
  • The company offers doctor-prescribed treatments. Dentists individually review cases while orthodontists develop the treatment plans.
  • Starting treatment is risk-free. You can begin with a free consultation. If you buy an impression kit, the company can refund you if you’re not qualified.
  • It has a refund policy for its clear aligners. If you cancel your treatment after receiving the first set of aligners, you can get a partial refund.
  • Professionally-tracked treatment progress. Clear aligners are delivered in sets. This allows the dental team to adjust your treatment based on your teeth’s movement.
  • It provides great service. The Straight Teeth Direct app makes it easy to reach the dental team or customer support. Many users say they’re helpful and respond quickly.
  • It gives you several ways to pay for your treatment. You can pay upfront, with private insurance, with installments. The company also offers financing for aftercare treatments.
  • It has great guarantees. They’ll replace lost or broken aligners, send an impression kit if you take bad impressions, or send more aligners if you’re not satisfied with the results.
  • Keeping your smile isn’t expensive. Straight Teeth Direct offers Maintainer Plans so you can whiten your teeth and keep them straight at affordable rates.

Straight Teeth Direct Cons

Happy with results but a couple of issues. Their customer service is very good. My two issues are that for a large part of my treatment, my top retainer did not fit properly. Although I kept on sending in photos, it took about 6 to 8 months for them to acknowledge that something was wrong.

Straight Teeth Direct Review on Trustpilot

But as soon as they did, they asked me to do some more moulds, and they sent out some new retainers quite quickly. Even my final retainer is not the best quality as it poorly fits around my back molar.

Straight Teeth Direct Review on Trustpilot

The other issue is with the payment, I chose to go with the payment plan of 3 lots of £500. They took all my payments months earlier than expected, and when the time came that they should [have] taken the payments they kept trying to take money out [of] my account!

Straight Teeth Direct Review on Trustpilot

The problem was sorted very promptly, but the whole situation [defeated] the point of a payment plan! I do have the results I wanted now, but the process wasn’t 100% as smooth as I expected.

Straight Teeth Direct Review on Trustpilot
  • It treats fewer conditions than Invisalign and other in-office aligners. Straight Teeth Direct works on mild and moderate cases but not on severely crooked teeth.
  • The outcome can be inconsistent. Some customers experienced longer treatment times, ineffective teeth straightening, and results that didn’t meet their expectations.
  • Straight Teeth Direct retainers are expensive without a Maintainer Plan. It will cost you £150 every 6 months or £300 every year if you replace them once yearly.
  • The payment plans will cost you more. Interest rates and additional fees increase Straight Teeth Direct’s treatment costs by as much as £117 to £424.
  • It doesn’t offer a free teeth whitening kit. It costs £199 if you buy it after the treatment. But you can get it for £169 when purchased with your aligner treatment.
  • There’s only one physical location. Unless you live in Central London or anywhere nearby, an initial in-person consultation may not be an option.
  • Straight Teeth Direct aligners can break when mishandled. It takes weeks for the company to replace broken clear aligners. This can delay your treatment.

Who Can Use Straight Teeth Direct?

Adults aged 18 and over can use Straight Teeth Direct to straighten their crooked smile.1 It can correct 80% of teeth alignment issues, including mild to moderate cases.

As a cosmetic treatment, Straight Teeth Direct only straightens the front teeth. Below are some examples of treatable conditions:

image 1

You need to meet a few other requirements before you can begin treatment. A trained dentist will review your case to see if you’re eligible for Straight Teeth Direct.1

For instance, you must have good oral health. Fillings and crowns are also okay if properly attached to your teeth. Tooth replacements like implants and bridges aren’t allowed.1

How Long Does Straight Direct Teeth Straighten Teeth?

Straight Teeth Direct usually takes 5 to 9 months to get your teeth straightened out.2 However, you should start seeing results within 90 days of beginning treatment.3

Factors that affect treatment times include how severe your teeth misalignment is and if you’ve been wearing your teeth aligners as prescribed. Complex cases usually take longer to treat.

How Much Does Straight Teeth Direct Cost?

Straight Teeth Direct’s aligner treatment (called the StraightBox® kit) costs £1,650. You can pay for it upfront, in installments, or with Humm financing.

Payment OptionsRequired UpfrontPayment Terms
Monthly Payment Plan£499£169/mo for 8 mos
6-Month Installment Plan£589£589/2 mos for 4 mos
12-Month Humm Financing£30£155.59/mo for 12 mos
24-Month Humm Financing£30£84.85/mo for 24 mos

You can start your treatment for £69 with the SmileBox® impression kit. But if you’re located in Central London, you can begin with a free in-person appointment.

Treatment costs include all the aligners, progress tracking with the Straight Teeth Direct app, and your first set of retainers. If you need additional retainers, they cost £150 each.

Take a Free Online Consultation

Cost of Straight Teeth Direct Smile Upgrades

The brand offers “Smile Upgrades” for an extra cost. They can improve and/or maintain your beautiful smile and help you save on treatment costs in the long run. Here are your options:

Features360 Whitening UpgradeBasic Maintainer PlanPremium Maintainer Plan
Upfront cost£199£150/yr£360/yr
Payment planNo£31.50/fortn spread over 5 payments£73/fortn spread over 5 payments
Teeth whiteningYesNoYes
Free retainersNo2 per year3 per year
Extra retainersNo£89/set£89/set
Refinement alignersNoUp to 3 free alignersUp to 3 free aligners
Digital scans are kept on fileNoYesYes

Besides these perks, Maintainer Plans include an extended guarantee for retainers. The company may provide replacement retainers for free if you lose or break them.

If you opt for a Maintainer Plan, there will be a £39 joining fee for the first year. If you join within 60 days of completing your treatment, this fee will be waived.

Does NHS Cover Straight Teeth Direct Aligners?

No. Straight Teeth Direct treatments aren’t covered by the National Health Service (NHS).

The NHS only covers orthodontic treatments that are necessary for maintaining oral health. Unfortunately, Straight Teeth Direct is a cosmetic treatment.

Does Insurance Cover Straight Teeth Direct?

It depends on your insurance. Your insurance company may help cover the cost if you’re privately insured. But if you only have health insurance, you’ll have to pay for the treatment.

You should ask your provider regarding your insurance coverage for aligner treatments.

How Does Straight Teeth Direct Work?

Straight Teeth Direct has a simple and easy-to-follow process. Here are the steps so you’ll know what to expect from the treatment:

Step 1: Choose how you want to begin

If you want a fully remote aligner treatment: You can start with an online quiz. During this step, you’ll be asked to do the following:

  • Answer questions (e.g., what you want to improve about your teeth)
  • Send recent photos of your teeth from different angles

After taking the free e-consultation, a local dentist will review your case and determine if you’re a good candidate. They’ll get back to you within 24 hours, and you can ask them questions.

People who qualify for the treatment can purchase the dental impression kit (SmileBox®). It includes instructions so you can take your own teeth impressions and send them back.

Take a Free Online Consultation

If you prefer to see an expert: You have to sign up for an online account before you can schedule an in-person appointment at their Central London clinic. During your visit, they will:

  • Visually assess your teeth to determine your candidacy
  • Interview you and ask questions (e.g., what your smile goals are)
  • Get your teeth scanned digitally using advanced equipment
  • Send your dental scans to Straight Teeth Direct

Step 2: Approve your Straight Teeth Direct treatment plan

A UK-registered orthodontist will create your personalised treatment plan using your dental impressions and teeth scans. The plan will include important information such as:

  • Your diagnosis ⁠— What your condition is
  • Estimated treatment time How long it will take to correct your teeth
  • Predicted teeth movements How your teeth will likely move over time

You can review the initial plan, request changes, ask more questions, and decide against the treatment. If you approve the plan, you’ll be prompted to proceed with the payment.

Step 3: Finish your aligner treatment at home

The company will send your clear aligners in sets instead of all at once. How soon you’ll receive the next set depends on the movement of your teeth.

Most people receive their clear aligners every 2 months. Expect at least 4 deliveries and 5 aligners with each delivery. You can start wearing them as soon as they arrive. 

Each aligner tray has to be worn for 22 hours daily and switched every 2 weeks. You also have to check in with the dental team every month so they can track your progress. 

The Straight Teeth Direct app will remind you when it’s time to change aligners. It’s also used to upload photos of your teeth. The dental team will review your progress and may decide to:

  • Adjust your treatment schedule based on the movement of your teeth
  • Send your next set of clear aligners so you can continue the treatment

At the end of the treatment, your assigned orthodontist will review the final results. They will help you decide if you need more aligners or if you can wear retainers.

Step 4: Maintain your smile

Now that you’ve achieved your ideal smile, the next step is to wear retainers for life. Retainers will keep your teeth straight and prevent them from shifting back into place.

You can buy them or upgrade to a Maintainer Plan, so you’ll get fresh retainers every 6 months. The company also gives you the option to whiten your teeth.

Straight Teeth Direct vs. Top Clear Aligners in the UK

Straight Teeth Direct is one of the best clear aligners in the UK, but it isn’t your only choice. You can also pick from in-office aligners, hybrid treatments, and other at-home clear aligners.

Here are the differences between Straight Teeth Direct and other teeth straightening treatments in the United Kingdom:

Clear Aligner BrandType of Aligner TreatmentTreatment CostsTreatable CasesAverage Treatment TimeStarting TreatmentProgress Monitoring
Straight Teeth DirectAt-home£1,650Mild to moderate5 to 9 monthsAt-home or in-personRemote
InvisalignIn-office£1,800 to £5,000Mild to severe12 to 18 monthsIn-personIn-person
NewSmileAt-home£1,595 to £1,695Mild to moderate4 to 10 monthsAt-homeRemote
Straight My TeethAt-home£1,199 to £1,699Mild to moderate6 to 8 monthsAt-homeRemote
Smile WhiteHybrid£1,695 to £3,695Mild to severe2 to 7 monthsIn-personRemote
Dr. SmileHybrid£1,390 to £2,090Mild to severe6 to 12 monthsIn-personRemote

Straight Teeth Direct vs. Invisalign UK

Invisalign can treat 90% of orthodontic cases, including severe teeth misalignment and bite problems. It’s our most recommended in-office clear aligner and requires frequent visits to the dentist’s office.

You’ll be working with an Invisalign provider throughout the treatment. These are UK-registered dentists or orthodontists who can:

  • Determine if you’re a good candidate for Invisalign
  • Perform dental work to help you qualify for the treatment
  • Track your progress in person every 4 to 6 weeks

Many UK dentists and orthodontists offer Invisalign treatment, making it easily accessible. Seeing a dental professional for your initial Invisalign assessment and treatment helps ensure you receive personalised care.

Read our full review of Invisalign UK

Straight Teeth Direct 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.

Straight Teeth Direct 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.

Read our full review of Straight My Teeth

Straight Teeth Direct 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

Straight Teeth Direct vs. Dr. Smile

Dr. Smile (formerly PlusDent) offers great value for your money. It corrects 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

Straight Teeth Direct vs. SmileDirectClub UK

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 Straight Teeth Direct Review

Straight Teeth Direct logo
Overall user experience
Treatment process
Pricing and financing
Customer service and aftersales support
Brand reputation

Straight Teeth Direct offers affordable orthodontics without sacrificing your convenience, safety, or the quality of its results.

A dental team will track your progress virtually through an app and adjust your treatment based on the movement of your teeth.

Straight Teeth Direct stands out from other at-home options because of this highly-personalised approach. It helps ensure customer satisfaction.

For instance, they may ask you to continue wearing your current aligners until they are sure you’re ready for the next batch.

How We Rated Straight Teeth Direct

We had in-house writers try Straight Teeth Direct’s clear aligner therapy. While testing its invisible teeth aligners, our team assessed and scored them based on five traits:

  • Overall user experience
  • Treatment process
  • Pricing and financing
  • Customer service and aftersales 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 Straight Teeth Direct:

Customer Experience
Pricing and Financing
Customer Service and After-Sales Support
Brand Reputation

Customer Experience

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

  • 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 Straight Teeth Direct’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 costs of Straight Teeth Direct, 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 Straight Teeth Direct’s customer support in-depth when answering queries and resolving issues. We assessed them based on:

  • Availability
  • Responsiveness
  • Knowledge
  • Reliability
  • Friendliness

We also checked its 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 Straight Teeth Direct.

Last updated on February 9, 2024
7 Sources Cited
Last updated on February 9, 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).
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