Professional Teeth Whitening in London
Award-winning Boutique Whitening from £250 — dentist-prescribed, safe and legal, with visible results in 2–3 weeks.
If you’ve been searching for teeth whitening in London, you’ll have noticed two things: the huge range of prices, and the confusing mix of dentists, beauty salons and online kits all promising a brighter smile. Here’s the simple truth — in the UK, effective teeth whitening is only safe and legal when it’s prescribed and supervised by a registered dental professional. At Toothi, our dentist-led clinic in Edgware, North London, Dr Ali prescribes the award-winning Boutique Whitening system with custom-made trays — at prices well worth a short trip up the Northern line.
Whitening options at Toothi
Power Whitening — £250
An accelerated in-practice whitening session for a fast, noticeable boost — ideal before a wedding, interview or big event, or as a kick-start to home whitening.
Home Whitening — £350
Custom trays made from a digital scan of your teeth, with professional Boutique gel worn overnight or 1–2 hours a day. Full results in 2–3 weeks — and you keep the trays for easy, inexpensive top-ups.
Why Londoners travel to Edgware for whitening
Teeth whitening in central London can cost considerably more than the same treatment in outer London — often for exactly the same dentist-prescribed systems. Toothi is in Edgware, North London (HA8), at the top of the Northern line: around 25 minutes from Camden Town and 35–40 minutes from King’s Cross by tube, with easy access from the M1, A41 and A406 and free parking nearby — something few central London clinics can offer. You get the same professional, dentist-supervised Boutique Whitening, a personal service from a clinician who examines your teeth first, and prices that are refreshingly straightforward: £250 for Power Whitening, £350 for Home Whitening. You can see everything we charge on our fee guide.
Is teeth whitening safe — and legal?
Yes — when it’s done through a dentist. UK law limits whitening products to a maximum of 6% hydrogen peroxide, and only registered dental professionals may legally provide them after examining your teeth. Beauty salons and online kits either break the law or use products too weak to make a real difference. Whitening is not suitable for under-18s, and we always check your teeth and gums are healthy first — whitening over undiagnosed decay or gum disease causes problems, which is why the dental check matters. Some people notice temporary sensitivity during treatment; it settles quickly and we can adjust your regime if needed.
What results can I expect?
Most patients lighten by several shades to a bright but natural-looking result. Whitening results vary from person to person, depending on your starting shade and the cause of the staining — we’ll give you an honest expectation at your assessment. Results typically last from six months to two or three years depending on tea, coffee, red wine and smoking habits, and because you keep your custom trays, occasional top-up gel keeps your smile bright for a fraction of the original cost.
How it works
Assessment
A £55 dental examination confirms your teeth and gums are healthy and whitening will work for you.
Scan & Trays
A quick digital scan — no gloopy impressions — and your custom whitening trays are ready within days.
Whiten
Whiten at home over 2–3 weeks with our support — or boost in-chair with Power Whitening.
Teeth whitening prices in London
| Dental examination & whitening assessment | £55 |
| Power Whitening (in-practice) | £250 |
| Home Whitening (custom trays & gel) | £350 |
See our full fee guide for everything else we offer.
Whitening as part of a smile makeover
Whitening is often the first step in a bigger transformation. If you’re considering composite bonding to fix chips, gaps or uneven edges, we whiten first — bonding resin doesn’t change colour, so we match it to your new, brighter shade. The same goes after teeth straightening: whitening is the natural finishing touch once your teeth are in their new positions. Live locally? See our dedicated teeth whitening in Edgware page.
Teeth whitening in London FAQs
How much does teeth whitening cost in London?
Prices in London vary widely between clinics. At Toothi in Edgware, Power Whitening is £250 and Home Whitening with custom trays is £350, with a £55 examination first to confirm whitening is safe and right for your teeth.
Where is Toothi and how do I get there from central London?
We’re at 1 Handel Parade, Whitchurch Lane, Edgware HA8 6LD — a short walk from Edgware station at the top of the Northern line, around 25 minutes from Camden Town. There’s easy access by car from the M1, A41 and A406.
Is teeth whitening legal at a beauty salon in London?
No. In the UK, only registered dental professionals may legally provide effective whitening (up to 6% hydrogen peroxide), and only after examining your teeth. Salon and online products are either illegal, unsafe without a dental check, or too weak to work.
How long does teeth whitening last?
Typically from six months to two or three years, depending on diet and smoking. Because you keep your custom trays, occasional top-up gel keeps your smile bright without paying for treatment again.
Does whitening damage your enamel?
No — dentist-supervised whitening at legal concentrations does not soften or damage enamel. Temporary sensitivity can occur during treatment and settles quickly.
Will whitening work on crowns, veneers or bonding?
No — restorations don’t change colour. That’s why we whiten first and colour-match any new bonding or veneers to your brighter shade afterwards.
How white will my teeth go?
It varies from person to person — most people lighten by several shades to a natural-looking brightness. We’ll give you an honest expectation at your assessment based on your current shade and the cause of the staining.
