If you’re thinking about brightening your smile, one of the first things you’ll want to know is how much teeth whitening costs in London.
Prices can vary a lot, and with so many different treatments it’s not always clear what you’ll actually end up paying. This guide breaks it all down in simple terms so you can see the real numbers in 2025 and understand why Smile London is the clinic many people choose for their whitening treatment.
Teeth Whitening Cost London: Average Prices in 2025
In London, the cost of teeth whitening can be as low as £165 or as high as £1,000. The exact figure depends on whether you choose an at-home kit or an in-clinic treatment.
On average, dentist-supervised home whitening costs between £200 and £400. In-practice whitening, such as laser or LED, usually ranges from £300 to £800. Premium systems like Enlighten or Polanight sit higher, usually between £595 and £750, with some Harley Street clinics quoting around £695.
We offer teeth whitening at Smile London starting from £350. You can also view our full treatment fees on our fees and finance page.
Different Types of Teeth Whitening in London
In-Practice Whitening
This treatment is done inside the clinic and is known for instant results. A whitening gel is applied to the teeth, activated with a special light, and the whole process usually takes about an hour.
Costs start at around £199 in budget clinics and can go up to £800 in top locations. Philips Zoom and LED treatments are commonly priced at £425 to £450.
Dentist-Prescribed Home Whitening Kits
These kits are custom-made for your teeth. Trays are filled with professional whitening gel and worn at home, often overnight for one to two weeks.
Prices are usually between £200 and £400. Philips Zoom home kits fall between £235 and £350.
Premium Whitening Systems
Enlighten remains one of the most reliable whitening options in London. It can achieve up to 16 shades lighter and is the only treatment that guarantees the lightest natural shade.
Standard pricing is £695, though some clinics run offers from £395. At Smile London, our Enlighten treatment starts from £600, which represents excellent value given its proven results and longevity. With the right care, Enlighten can last between 4 and 5 years, making it one of the longest-lasting whitening systems available.
You can read more about the treatment on our dedicated Enlighten whitening page.
What Affects the Cost of Teeth Whitening?
There are several reasons why the price of whitening can vary from one clinic to another.
- Location plays a big role. Clinics in Central London or Harley Street usually charge more.
- The experience of the dentist matters, with specialists in cosmetic dentistry often charging higher fees.
- In-practice treatments cost more than home kits because of the equipment used and the speed of results.
- Stains that are deeper or more stubborn may push the price up.
- Extra services such as hygiene treatments or replacing old fillings and crowns to match your new tooth shade can add to the cost.
At Smile London, we’re open and transparent with pricing. Despite being based in the heart of the city, we keep our prices fair. From composite bonding to porcelain veneers, you’ll always know what to expect before treatment begins.
NHS Teeth Whitening
Teeth whitening isn’t usually available on the NHS. The only exceptions are when there’s a genuine medical reason, like discolouration caused by trauma, illness, or certain medications.
If approved, it falls under Band 3 NHS dental fees. For most people though, whitening is a private cosmetic treatment.
DIY Whitening vs Professional Whitening
Shop-bought whitening kits and toothpastes are cheaper but rarely deliver noticeable results. By law, they can only contain up to 0.1% hydrogen peroxide, which is too low to make much difference.
Dentist-prescribed kits can contain up to 6% hydrogen peroxide, which is why they’re much more effective. At Smile London, every whitening treatment begins with a consultation to make sure your teeth and gums are healthy before starting. You can book your consultation here to get started.
How Long Do Results Last?
Most whitening treatments last between 6 months and 2 years. Premium systems like Enlighten can last 4 to 5 years if you look after your teeth properly.
How long your results last depends on your habits. Smokers or people who drink lots of coffee, tea, or red wine will notice stains returning sooner. Those who maintain good oral hygiene can enjoy results for much longer.
Aftercare for Longer Results
Right after whitening, teeth are more porous and stain more easily. For the first 48 hours, it’s best to avoid tea, coffee, red wine, tomato sauces, berries, dark chocolate, and smoking. Hot and cold drinks should also be avoided during this time, as extreme temperatures can allow stains to settle.
Long term, brushing twice daily with fluoride toothpaste, flossing, and keeping up with regular hygiene visits are the best ways to preserve your results. Cutting down on highly coloured or acidic foods and drinks will also help keep your smile looking fresh.
What You’ll Actually Pay in London
Here’s what you can expect to pay across London in 2025:
- Budget in-clinic whitening: £165–£199
- Standard in-clinic whitening: £300–£450
- Premium in-clinic whitening (Zoom, LED): £425–£500
- Dentist-prescribed home kits: £200–£400
- Premium home whitening (Enlighten, Polanight): £595–£750
- Enlighten Whitening at Smile London: From £600
Why Choose Smile London for Teeth Whitening?
At Smile London, we believe a Hollywood smile should be accessible to everyone. That’s why we provide tailored payment plans and 0% interest finance options to make investing in your smile stress-free.
Get an interest free loan in under 5 minutes here
We offer a wide range of cosmetic treatments and are trusted by patients across London. You can read about their experiences on our client stories page.
Our dentists are highly experienced in cosmetic procedures, and our clinic is designed with comfort in mind. Whether you’re considering a quick whitening boost or a premium option like Enlighten, we’ll guide you every step of the way.
If you’re ready to start your journey to a brighter smile, you can book your consultation today.
