How Much Does Invisalign Cost in the UK? A 2026 Price Breakdown
The short answer
Private orthodontic treatment in the UK generally costs between £2,000 and £6,000, according to the NHS, “depending on the complexity of the treatment and the type of appliances used, but fees can be higher”. Invisalign sits within that range. Treating one arch costs less than treating both. Retainers afterwards are a separate, ongoing cost that many quotes leave out.
Suitability for treatment depends on a clinical assessment. This treatment may not be appropriate for every patient.
Why there is no single Invisalign price
Invisalign is not one product with one fee. It is a system of custom-made clear plastic aligners, and the number of aligners your case needs is the main thing driving what you pay. A patient with mild lower crowding might complete treatment in a handful of aligners over a few months. A patient correcting a deep bite across both arches might need several times that number over eighteen months or more, with more appointments, more monitoring and more chair time.
That is why Align Technology’s own UK site declines to publish a price and says instead that “the price of your personal Invisalign treatment plan will be determined by your Invisalign Doctor, based on your specific needs”.
It is also worth being straight about something the cost guides tend to gloss over: we are not aware of any official UK dataset of private orthodontic fees. NHS published charges cover NHS treatment only. Any regional “average Invisalign price” you find online is an estimate made by whoever published it, not an official figure.
What actually moves the price
How many aligners your case needs
More aligners means more manufacturing cost, a longer treatment plan and more review appointments. This is the single biggest variable. Two patients at the same practice can be quoted very different fees for the same branded treatment.
One arch or both
Treating the upper teeth alone is cheaper than treating upper and lower together. It is not always the right clinical choice, though — moving one arch without the other can change how the teeth meet. Whether single-arch treatment is appropriate is a clinical decision, not a budgeting one.
Who is providing the treatment
Invisalign can be provided by a general dentist who has completed the manufacturer’s training, or by a dentist who has completed recognised postgraduate training in orthodontics and is entered on the General Dental Council’s register for that field. The GDC recognises eleven such fields under the GDC (Specialist List) Regulations 2024, so patients can identify dentists with formally recognised additional training, and the protected title attached to each may only be used by dentists actually entered on the relevant list. Fees usually reflect the level of training and the complexity of case a clinician takes on.
Case complexity and what else needs doing
Aligners move teeth. They do not treat decay or gum disease, and neither should be left untreated while teeth are being moved. If a clinical assessment finds work that needs doing first, that is an additional cost with its own timeline.
What to check is inside a quote
Most UK practices quote a package fee, but what sits inside that fee varies between practices and we cannot tell you what any other practice includes. Before you compare two numbers, ask each of them the same questions in writing.
Ask whether the fee covers the diagnostic scan and treatment planning, all aligners in the prescribed series, attachments (small tooth-coloured shapes bonded to teeth to help specific movements), routine review appointments, and any mid-course refinement aligners.
Then ask what falls outside it. The items worth naming explicitly are the initial examination and radiographs, treatment of decay or gum disease found at assessment, tooth whitening, any composite reshaping done afterwards, and retainers and their replacement.
A “from” price advertised on a website is, by definition, the least anyone pays. Ask what a case like yours costs, in writing, and ask specifically whether retainers are inside or outside that figure.
Retainers: the cost most people forget
Teeth move back. The British Orthodontic Society is direct about this: teeth “tend to want to move back towards their original positions. This is called relapse”, and “as we get older our teeth may start to move unpredictably, often showing some crossing over and increased in crowding” [sic]. Its guidance to patients is equally direct — “the longer you wear retainers, the longer you can keep your teeth straight”.
The NHS says the same thing more briefly: after braces are removed “you’ll need to wear a retainer, which is a device that stops your teeth moving back to their original position”.
In practice this means retention is not a one-off purchase at the end of treatment. The British Orthodontic Society’s advice on a bonded retainer is that “if it ever gets loose, you should seek advice” — so budget for maintenance and replacement over the years, not just for the first set. Any quote that treats retention as an afterthought is understating the real cost of straightening your teeth.
Aligners or fixed braces? What the evidence says you are paying for
This matters financially, because choosing the cheaper appliance is a false economy if it cannot achieve the result you want — and choosing aligners for a case that suits them can shorten treatment.
A systematic review and meta-analysis by Ke, Zhu and Zhu in BMC Oral Health (2019;19:24) compared the two directly. Its conclusion: “Both clear aligners and braces were effective in treating malocclusion. Clear aligners had advantage in segmented movement of teeth and shortened treatment duration, but were not as effective as braces in producing adequate occlusal contacts, controlling teeth torque, and retention.” For non-extraction cases, the pooled estimate put aligner treatment around six months shorter. For extraction cases the picture differs: one study included in that review found aligner treatment ran around 44% longer than braces — a single study rather than a pooled result, so weigh it accordingly.
A later systematic review of more difficult cases by Jaber, Hajeer and Sultan (Cureus 2023;15(4):e38311) reached a compatible conclusion: both work for premolar-extraction cases, but “fixed appliances have the advantage of achieving better buccolingual inclination and occlusal contacts in a shorter treatment duration”, and aligner treatment “might be associated with differences between predicted and achieved tooth movements”.
Read plainly: clear aligners are well suited to mild and moderate crowding, spacing and alignment, and often finish faster. The more complex the case, the stronger the argument for fixed appliances. A clinician who recommends fixed braces for your case is not upselling you — in several respects fixed appliances remain the more controllable tool.
Is Invisalign available on the NHS?
Essentially, no — not for adults, and not as a brand.
NHS orthodontic treatment “is free for people under the age of 18 with a clear health need for treatment”, assessed using the Index of Orthodontic Treatment Need, and “NHS treatment is available for grade 4 and grade 5 cases”. For everyone else, the NHS is explicit: “orthodontic treatment is not usually available on the NHS for adults.”
Where NHS orthodontic treatment is provided to an adult on clinical need, it falls into Band 3, currently £332.10 in England. In practice the appliance offered will be a fixed brace — the NHS notes that “fixed metal braces are commonly used on the NHS” — and waiting lists can be long. Treatment sought for appearance alone is not NHS treatment.
Why online aligners cost less
Direct-to-consumer aligners, ordered online and supervised remotely, are cheaper because they remove the parts of the process that cost money: the in-person examination, the radiographs, the clinician’s chair time, and the ongoing monitoring.
The General Dental Council’s position on this is unambiguous. “At present, there is no effective substitute for a physical, clinical examination as the foundation for that assessment.” It adds that “direct interaction between patient and practitioner is essential for providing patients the opportunity to ask questions, provide consent”, and to be satisfied the proposed treatment is likely to meet their needs.
The GDC also confirms these services “fall within the legal definition of dentistry so can only be performed by dentists and dental care professionals who are registered with the GDC”. You can check any UK dentist’s registration free on the GDC’s online register. If you are comparing a low online price with a practice quote, that gap is the difference you are being asked to accept.
Paying for treatment
Ask what payment options are available and what they cost. Get the total figure and the payment schedule in writing.
What we charge at Horsforth Smile Clinic
Our published fees, taken from our full price list:
Prices correct as of July 2026 and subject to clinical assessment. Invisalign fees are “from” prices and depend on the number of aligners your case requires, which is confirmed after assessment and planning — not before.
Suitability for treatment depends on a clinical assessment. This treatment may not be appropriate for every patient.
If you are researching treatment locally, our Invisalign treatment page sets out how the process runs at the practice. Some patients also choose to refine the shape or edges of individual teeth with composite bonding once alignment is complete; that is a separate treatment with a separate fee, and it is not required. It is also worth setting expectations honestly before you spend anything — our guide to realistic Invisalign results covers what aligners can and cannot change.
Risks and suitability
Orthodontic treatment is not risk-free and is not appropriate for everyone.
Active decay or untreated gum disease must be addressed before teeth are moved. Aligners are removable, which helps with cleaning, but they only work while they are being worn — treatment that is not followed as prescribed will take longer or will not achieve the planned result. The NHS warns that sugary food and drink during orthodontic treatment “can cause problems like tooth decay”. Some patients experience discomfort when changing to a new aligner. As set out above, teeth relapse without retention.
The evidence also shows that predicted movements and achieved movements do not always match, which is why refinement stages are common and why a treatment plan is a projection rather than a promise.
Whether Invisalign is right for you can only be established by an examination, including radiographs, by a GDC-registered dentist. Suitability for treatment depends on a clinical assessment. This treatment may not be appropriate for every patient.
Frequently asked questions
Is Invisalign more expensive than fixed braces? Not necessarily. The NHS puts private orthodontic treatment — which covers both aligners and fixed appliances — at £2,000 to £6,000, “depending on the complexity of the treatment and the type of appliances used, but fees can be higher”. Both appliance types sit inside that published range, and the bigger cost driver is the complexity of your case rather than the brand of appliance.
Can I get Invisalign on the NHS? No. NHS orthodontics is limited to under-18s with a clear health need scoring grade 4 or 5 on the Index of Orthodontic Treatment Need, plus a small number of adults with clinical need, and the appliance provided is typically a fixed metal brace. The NHS states that “orthodontic treatment is not usually available on the NHS for adults.”
Does the price include retainers? Ask explicitly, because this is a common gap between a quoted fee and what patients actually spend. Our own retainer fees are published in the fee table above so you can add them up before you decide.
Is it cheaper to treat only my top teeth? Yes, single-arch treatment costs less. Whether it is appropriate is a separate question — moving one arch can change how your teeth meet, so this is a clinical decision made at assessment rather than a way to reduce the fee.
Why are online aligners so much cheaper? They remove the in-person examination, radiographs and clinical supervision. The GDC’s position is that “there is no effective substitute for a physical, clinical examination as the foundation for that assessment.”
Do I pay for a consultation? Our Invisalign consultation is free of charge. A new patient examination including intra-oral radiographs is charged at the fee shown in the table above and on our full price list.
Sources
- NHS. Orthodontics.
- NHS. Braces and orthodontics.
- NHS. How much NHS dental treatment costs.
- General Dental Council. Specialist lists.
- General Dental Council. Statement on ‘direct-to-consumer’ orthodontic treatment.
- British Orthodontic Society. Retainers.
- Ke Y, Zhu Y, Zhu M. A comparison of treatment effectiveness between clear aligner and fixed appliance therapies. BMC Oral Health. 2019;19:24. doi:10.1186/s12903-018-0695-z
- Jaber ST, Hajeer MY, Sultan K. Treatment effectiveness of clear aligners in correcting complicated and severe malocclusion cases compared to fixed orthodontic appliances: a systematic review. Cureus. 2023;15(4):e38311. doi:10.7759/cureus.38311
- Align Technology. Invisalign cost.
- Horsforth Smile Clinic. Price list. Prices correct as of July 2026.
