Meet Our Specialist Team
At ONE ORTHODONTICS, treatment is led by a highly experienced multidisciplinary specialist team with expertise in orthodontics, dentofacial orthopaedics, facial aesthetics, digital treatment planning and complex interdisciplinary care.
Our consultant-led approach combines advanced technology, evidence-based treatment and personalised care to deliver exceptional outcomes for children, teenagers and adults.
Dr Chris David DONALDSON
Consultant Orthodontist
Clinical Director

MBBS, BDS, MSc, MFDS RCS (Ire.), MOrth RCS (Edin.), FDS RCS (Edin.)
Providing consultant-level orthodontic & dento-facial orthopaedic care for patients across Surrey and London.
Dr Donaldson is a Specialist Orthodontist with dual training in medicine and dentistry and extensive experience in advanced orthodontic and dento-facial treatment.
He provides specialised care across both straightforward aesthetic concerns and more complex orthodontic and jaw-related conditions, with a structured, digitally planned approach to treatment.
Alongside private practice, he works as a Hospital Consultant within the NHS in London, where he treats complex cases, teaches orthodontic trainees and leads hospital-wide digital treatment planning and 3D printing spanning medical and dental specialities.
His clinical interests include:
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Digitally guided orthodontics & dento-facial orthopaedics
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Facial aesthetic–driven orthodontic treatment planning
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Minimally visible orthodontic solutions for adults and professionals
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Optimising tooth position in preparation for cosmetic or restorative dental treatment (e.g. implants)
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Management of complex bite and jaw discrepancies
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Orthodontics combined with jaw (orthognathic) surgery
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Growth and upper airway focused treatment
Dr Donaldson founded and leads the clinic, combining specialist expertise with advanced digital technology to deliver highly personalised treatment.
Patients value his calm, detailed and highly personalised approach to care, with a strong emphasis on careful planning, clear communication and long-term stability.
Jaw & Facial Surgery
Mr Ash MESSIHA
Consultant Maxillo-facial Surgeon
Specialist in Maxillo-facial Surgery
MBBCh, BDS, BAO, MFDS RCS, MRCS, FRCS (Intercollegiate), FRCS (OMFS)
Mr Ashraf Messiha is a Consultant Maxillofacial Surgeon with extensive experience in the assessment and surgical management of facial and jaw conditions. He is dual-qualified in medicine and dentistry and has completed higher specialist training in oral and maxillofacial surgery at leading UK institutions.
Ash’s clinical practice focuses on conditions affecting facial form, jaw function and facial balance. This includes corrective jaw (orthognathic) surgery, facial asymmetry and deformity, temporomandibular joint (TMJ) disorders, facial trauma and reconstructive surgery. His background also includes specialist training in facial aesthetics and septorhinoplasty, allowing him to consider both function and appearance when planning treatment.
Within the NHS, Ash holds a Consultant post and is a core member of several specialist multidisciplinary teams, including the Cranio-Orbito-Facial deformity team and the Joint Orthognathic team. He has played a leading role in developing services for post-traumatic facial deformity and has significant experience in facial trauma surgery and the management of facial skin cancers.
Alongside his clinical work, Ash is actively involved in postgraduate education and training. He is the Educational Lead for the Pan-London Oral and Maxillofacial Faculty at the London Deanery, contributing to the training and assessment of future specialists.
Patients value Ash’s calm, thoughtful approach and his ability to explain complex surgical problems clearly and honestly. He places strong emphasis on careful assessment and planning, ensuring that recommendations are appropriate, proportionate and well understood. His aim is to support patients in making informed decisions and to deliver outcomes that prioritise function, stability and long-term wellbeing.
Expanding Our Specialist Team
Consultant Orthodontist
Specialist in Orthodontics
We are delighted to be welcoming a second Consultant Specialist to our clinical team.
This exciting addition reflects our continued commitment to delivering the highest level of specialist care. By expanding our consultant-led service, we are able to offer even greater expertise, increased availability, and more comprehensive treatment options for our patients.
Our new Consultant brings extensive experience in complex cases, advanced treatment planning, and multidisciplinary care.
Full details will be announced shortly.
Expanding Our Specialist Team
Consultant Orthodontist
Specialist in Orthodontics
We are delighted to be welcoming a third Consultant Specialist to our clinical team.
Our new Consultant combines a friendly, approachable manner with a strong commitment to delivering high-quality, patient-centred care. They have trained in latest orthodontic techniques and digital workflows, with a focus on providing efficient, comfortable treatment and an excellent patient experience.
Full details will be announced shortly.

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