74 St. John's Wood High Street,
St. John's Wood, London


Want straight teeth quickly but don’t want metal braces? Speak to our teeth straightening experts to find out if Invisalign® is right for you.

Nearest Stations

St John’s Wood, Maida Vale; Jubilee Line

Paddington, Marylebone, West Hampstead

Book Your FREE INVISALIGN Consultation

Open Day 20th March

Completely FREE & No-Obligation

FREE 3D Scan

FREE Boutique Teeth Whitening

FREE Retainers

FREE Oral Care Goody Bag


Don’t take our word for it.

See our Patient’s Results!

Dr Surina Explains Successful Patient Case Study ⤵️

PG Diploma in Clear Aligner Orthodontics

Dr. Simmi Daryani

600+ Invisalign Cases!

Dr Simmi is most passionate about minimally invasive aesthetic dentistry and teeth straightening. She has successfully completed over 600 Invisalign cases and with her dedicated to post-graduate training, Dr Simmi has completed a PG Diploma in Clear Aligner Orthodontics, a PG Certificate in Fixed Orthodontics and a PG Certificate in Aesthetic & Restorative Dentistry.

Dr Simmi is an Ambassador for the Aligner Dental Academy, Invisalign’s official educational Partner, lecturing and training young dentists in Invisalign. She is an associate member of the British Academy of Cosmetic Dentistry.

Dr Simmi is most passionate about minimally invasive aesthetic dentistry and teeth straightening. She has successfully completed over 600 Invisalign cases with a PG Diploma in Clear Aligner Orthodontics, a PG Certificate in Fixed Orthodontics and a PG Certificate in Aesthetic & Restorative Dentistry.

Judy, Cinema Producer & Patient at Twoth Dental Clinic ⤵️

Cosmetic Dentist & Invisalign Provider

Dr Surina Sehgal

+120K Followers on Instagram!

Dr. Surina Sehgal is a passionate dentist who focuses on both general and cosmetic dentistry. Her strong dedication to oral health and nutrition is evident in her role as the Head of Dental Education at Twoth London. Through this position, she focuses on educating the public about the importance of preventive measures.


Dr. Surina firmly believes that maintaining a healthy mouth is paramount to ensuring the long-lasting success of dental procedures. As an Invisalign provider, she also offers patients the opportunity to discreetly straighten their teeth and achieve beautiful, natural-looking smiles.

With a degree from Kings College London, Dr. Surina combines her expertise and passion to create stunning smiles for her patients. She plays a pivotal role in the dental field, actively engaging in educational initiatives, speaking at various events, and collaborating with renowned brands.

Twoth Dental + Facial Aesthetics
Based on 124 reviews
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Sunny SekhonSunny Sekhon
18:41 10 Nov 23
Amazing experience! I’ve started my Invisalign treatment with Dr Simmi at Twoth and the whole team are amazing! It’s a pleasure to go there and get my treatment, they treat you like family and with so much love!Highly recommend
Tatia BeridzeTatia Beridze
14:52 10 Nov 23
Fatima BerrahFatima Berrah
16:20 09 Nov 23
Daniel LoiDaniel Loi
11:22 03 Nov 23
I cannot express enough gratitude for the exceptional care provided by Twoth. After enduring several challenging experiences with NHS dentists, I was apprehensive about seeking dental care. However, Dr. Surina's and Carlos's gentle approach and compassionate demeanor completely transformed my perspective. Their expertise and genuine concern for my comfort made each visit a positive and reassuring experience. I am truly thankful for the outstanding care and would highly recommend their services to anyone seeking a reliable and empathetic dental professional.
Dave MachesDave Maches
15:29 12 Oct 23
Friendly and awesome experience!!
Didi OnlineDidi Online
07:50 06 Oct 23
I've been a loyal customer of Dr. Tara for years, and let me tell you, her service is absolutely top-notch! I can't even begin to express how thrilled I am with the results every single time I visit her. On top of that, she's the kindest and most caring person you'll ever meet. She genuinely cares about each and every one of her clients, and it really shows.
Ahmed El MahiAhmed El Mahi
20:08 02 Oct 23
K LambK Lamb
17:05 26 Sep 23
Fantastic consultation. Very informative and had incredibly knowledgeable staff. Would recommend if you’re looking to learn more about getting that smile you’ve always wanted
Alvaro CastanoAlvaro Castano
09:19 26 Sep 23
Best experience!It just doesn’t feel like going to the dentist. Warm and polite people with outstanding service.Thank you! ❤️
ioana chivuioana chivu
15:38 29 Aug 23
Had the best experience with Dr Kinneri ❤️ Such a friendly and attentive person, will for sure come back when needed. You can really tell she is a perfectionist and her work is really detailed and precise. I also went to Tara months ago and had an amazing experience, I recommend them both!!
Amaya AlvarezAmaya Alvarez
10:54 25 Aug 23
Micro needling and dermabrasion virgin, but Sapphira’s soft kind hands did absolute wonders to put me at ease. Wonderful treatment, my skin already feels restored and softer than it has in years! Back next month and can’t wait. Thank you so much Sapphira.
Rachel StewartRachel Stewart
15:10 08 Aug 23
Twoth's owner, manager, staff, and dentists are all top notch! They are so kind and welcoming and help make the whole dental experience calming and as stress free as possible. I cannot recommend them enough!
Sari AlikhaniSari Alikhani
14:39 31 Jul 23
Phenomenal. Dr Tara is the only dr to have prophilo with in london
Amy Lathan-AldersonAmy Lathan-Alderson
12:17 26 Jul 23
Dr Tara is the best in the aesthetics business. A beautiful lady who is unbelievably talented. The patient coordinators in the Reception area make you feel so comfortable from the second you walk in the door. 10/10 experience every time and I can't wait to visit again next year!
Dishanth SatkunarajahDishanth Satkunarajah
15:24 22 Jul 23
I received treatment from Dr. Ali and his colleague Shova at Twoth Dental. After not visiting a dentist for a few years, I was quite nervous to go but Twoth exceeded my expectations. From the receptionist to Dr. Ali, they were all so welcoming and made it a very pleasant experience.Not only did Dr. Ali carry out a pain-free experience, he also explained each part of the process so I (non-dentist) could follow easily.Thanks again to the team at Twoth, I’ll definitely be back!

Your Process

Your First Appointment

Moulding Process

Fitting the First Tray

Invisalign First Clear Braces For Children In London

Invisalign First is a clear aligner treatment designed for young children and can be used to correct issues with arch development and expansion, tooth crowding and spacing, tooth protrusions, and the overall appearance of a child’s smile.‍ As a child grows, their smile grows with them. And even with baby teeth, it may be the perfect time for your child to start orthodontic treatment. This is known as Phase 1 treatment. At this stage, orthodontists can see issues that may need early treatment to address a developing problem.



Welcome to Twoth Dental Clinic

Our team of dentists are all at the forefront of their discipline, providing comprehensive care all in our state of the art facility. This saves you the inconvenience of having to travel from clinic to clinic to be treated by different dentists. You can expect:

Only the best possible care

Totally committed to giving you the highest possible levels of dental health

Bespoke options for treatment

Unrivaled Invisalign expertise

A comfortable and relaxed environment

Convenient opening times

Flexible payment options and competitive prices

Become a New Patient Today!

Our dedicated team are here to support you throughout your dental orthodontics.
We provide 0% payment plans to help spread the cost of your treatment.

“The charismatic orthodontist’s passion is making smiles look standout – via Invisalign, or his signature Damon braces, which “sliding” brackets to encourage teeth to shuffle gently into possition”

High Tech Scanners

Dental & Surgical Imaging

High tech and modern scanning including CBCT, OPG and Cephalometric Images (first image of large scanner)
5D Intra Oral Itero Scanner (for 2nd image – image coming through)


3D Scanner

High tech and modern scanning including CBCT, OPG and Cephalometric Images (first image of large scanner)
5D Intra Oral Itero Scanner (for 2nd image – image coming through)

Why Parents Trust Twoth With Their Invisalign

See What our Invisalign Patients Have to Say…

Don’t take our word for it, see what our patients say!

We visited Dr Neil Counihan, Dr Collie Moran and Bhavnita Patel this week at their wonderful new clinic in St John’s Wood. My daughter was given super encouraging advice by Neil and Bhavnita and their excellent team, and has decided to start the process of orthodontic braces with Twoth. I was given careful and thoughtful expert advice by Neil and Collie on the onward care of my teeth following surgery and radiotherapy. We could not have wished for a better or more thorough service. Helpful, kind and very experienced staff in a super clinic, with all the latest scanning and orthodontic technology. I thoroughly recommend this practice.

Graham Powell

I had a very pleasant experience at Twoth with Dr Surina and Dr Neil. From start to finish the staff were incredibly attentive, helpful and very friendly. Once I had completed all the scans which formed part of my assessment, Dr Surina throughly talked me through the findings and the treatment plan. I suffer from a complex case of TMJ and both Dr Surina and Dr Neil were very sympathetic towards my situation and took great care and attention when advising me of my options and treatment plan. Both doctors have an incredible bedside manner and I particularly loved how passionate Dr Surina is about educating her patients on preventative measures to avoid dental problems in the future. Overall, this was one of the most positive dentist experiences I’ve had and I look forward to becoming one of Dr Surina’s regular patients.