Meet our team

What is an Orthodontic Specialist?

All treatment in the practice is carried out by General Dental Council (GDC) registered specialists in Orthodontics. We have all been trained to Specialist level. The comprehensive specialist training allows us to treat all types of complex dental orthodontic problems with the most up to date appliances and materials. View the GDC specialist list at:

Our Specialist Orthodontists

Dr Thomas Hartridge BDS, FDS, MSc, MOrth

GDC Number: 71888

Tom graduated from Bristol Dental Hospital in 1996 and obtained his orthodontic postgraduate qualifications from Bristol University and the Royal College of Surgeons in 2001. He is on the GDC specialist list for orthodontics.

Before qualifying as a specialist orthodontist Tom has worked as a general dentist and also worked for a number of years in hospital oral surgery posts. This provides the experience and knowledge to deal with the many problems seen in a specialist orthodontic practice.

Tom enjoys seeing the transformations possible from orthodontic treatment and the great improvements that can be made every day to peoples’ lives.

Tom lives in Southsea with his wife and two young children, who keep him very busy when he’s not working!

Dr Nicholas Turnbull BDS, FDS, MSc, MOrth, FDS (Orth) RCS Edin

GDC Number: 67451

Nick graduated from Cardiff Dental Hospital in 1992 and obtained his postgraduate qualifications from the Royal London Dental Hospital and the Royal College of Surgeons. He is on the GDC specialist list for orthodontics.

Following qualification as a specialist orthodontist he worked as a Consultant for the Royal Navy in Portsmouth. More recently, he continues to hold a part-time NHS Hospital Consultant post at Queen Alexandra Hospital, Portsmouth. He is closely involved in teaching and training new orthodontists and keeps up to date on the latest techniques by attending regular meetings and courses.

He also lectures at clinical meetings regionally and nationally and is a member of the British Orthodontic Society, the European Orthodontic Society, and the World federation of Orthodontists.

Nick has a clinical interest in adult orthodontics, high-speed low friction treatment (Damon system) and low visibility cosmetic orthodontics.

Nick lives in Southsea with his wife and young daughter. His interests include running (he has completed a few marathons recently and the Great South Run most years) and snowboarding.

Dr Skjalg Johnsen DDS, PhD

GDC Number: 84208

Skjalg graduated from the Karolinska Institute Dental School in Stockholm, Sweden in 2000. While practising as a general dentist he continued with research at the famous Karolinska Institute and obtained his PhD in 2005. Shortly after this, he started a postgraduate training at the Eastman Institute in Stockholm and later obtained his orthodontic postgraduate qualifications. He is on the GDC specialist list for orthodontics.

Following qualification as a specialist orthodontist he continued working at the famous Eastman Institute developing the department and leading the training of new specialists.

In the field of orthodontics, he favours the Damon system, especially for adults, which allows shorter treatment periods and fewer visits based on low friction treatment. Further, when treatment planning Skjalg aims for ‘face-driven orthodontics’, meaning that focusing on the teeth is only a part of the whole picture. Modern specialists are trained to include the patients face, profile and lips in order to individualise and optimise the result.

Skjalg especially enjoys the transformation of orthodontic treatment in adult patients. Many of these patients have in all their adult life been too embarrassed to show their teeth when smiling, while after the treatment they meet people with a new confidence and a beautiful smile.

Skjalg lives in Southsea with his wife. He has an interest in music and art, likes to travel and play badminton.

Dr Joshua Robinson

GDC Number: 211293

Josh graduated in dentistry from Kings College London in 2011 and was part of the first cohort of dental students to have a placement at the Portsmouth Dental Academy. This was followed by Foundation Training in Portsmouth and Hospital posts in Cardiff and Bristol covering Oral & Maxillofacial Surgery, complex restorative dentistry and the community dental services, with an emphasis on the dental health of children. He completed his specialist orthodontic training in Bristol Dental School and the Royal United Hospital in Bath. He is on the GDC specialist list for orthodontics and a member of the British Orthodontic Society and the World Federation of Orthodontists.

Josh lives near Petersfield in the South Downs and enjoys taking advantage of the local countryside, including running, cycling and playing golf.

Dr Alexandra Florea

GDC Number: 155510

Alexandra experienced first hand how orthodontic treatments can improve life by boosting self-esteem and self-confidence. As a GDC Registered Specialist in Orthodontics, she feels blessed to be able to return the favour to her patients.

Alexandra studied dentistry at the University of Dentistry in Iasi and completed the 6-year program in 2003. She started in general practice where she gained 10 years of experience and during that time she realized her true passion is in the field of Orthodontics. Subsequently she returned and completed her Specialist in Orthodontics postgraduate qualification.

She is passionate about the aesthetic transformation and the happiness that orthodontics can bring to patients, always trying to find new ways to improve the patient experience on their orthodontic journey. She likes to keep her patients informed about their treatment and together with her attitude towards her work make her a trustworthy and approachable orthodontist. In her spare time, she enjoys playing with her lovely daughter, watching movies, travelling and spending time with family and friends.

Practice Manager

Sara Wiseman – GDC: 125016


Orthodontic Therapists

Our specialist orthodontists are assisted by our orthodontic therapists

An orthodontic therapist is a registered member of the dental team. They assist the orthodontist in carrying out orthodontic treatment providing some aspects of the treatment themselves. Orthodontic therapists work in a similar way to a hygienist or dental therapist assisting the treatment provided by general dentists.

Ms Lorraine Booth – GDC: 154875
Mrs Jennifer Hutchings – GDC: 238541


Dental Nurses

Miss Sarah Andrews – GDC: 246154
Miss Rosie Barwick – GDC: 265098
Mrs Donna Brooker – GDC: 135576
Mrs Charlotte Blythe – GDC: 266905
MrsSian Cains – GDC: 187181
Miss Natalie Couch – GDC: 212106
Ms Janine Gadd – GDC: 276040
Mrs Caroline Hancock – GDC: 125340
Mrs Dawn Holmes – GDC: 112404
Mrs Tania Morgan – GDC: 181971
Ms Claudia Murch – GDC: 249277
Mrs Julie Nugent – GDC: 149888
Ms Elena Cristina Straub – GDC: 279179
Miss Sarah Tucker – GDC: 138769
Miss Chrissie Warden – GDC: 275259



Ms Sandra Knight
Mrs Andrea Harmar


Our Professional Associations

British Orthodontic Society (Member)
European Orthodontic Society (Member)
World federation of Orthodontists (Member)
British Dental Association (Member)
Royal College of Surgeons of Edinburgh (Fellows)

Opening Hours

9.00am - 5.00pm
9.00am - 5.00pm
9.00am - 5.00pm
9.00am - 5.00pm
9.00am - 5.00pm
For problems with your brace or out of hours emergency treatment please telephone us for details. For dental emergencies please contact your dentist.

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