Meet the Team

Dr Peter Johnston

Practice Owner

GDC Reg: 67704

Peter Johnston is our principal dentist and owner here at Castleton. Having taken over the partnership in 1998, there is no denying Peter has experience on his side.
Peter qualified in 1992 and went on to complete further qualifications (DPDS) in Restorative dentistry and Endodontics in 2000. Peter has a special interest in and is passionate about Endodontics enabling a perfectionism to take form through thorough and intricate root canal fillings. In recent years, Peter has taken over sole ownership of the practice as we saw his colleague, Ulla Morrison, retire after 30 years at the practice. Peter’s sheer talent, hand in hand with his professionalism and knowledge of the industry, contribute to his long established and adoring patient base. Despite 2017 marking Peter’s 20th year at Castleton Dental, word of mouth around Farnham still serves Castleton well, reflected by our ever-growing list of patients.

Peter is an avid sportsman, with interest in playing squash and golf. He enjoys skiing with his family and is always paying close attention to what’s happening at Wimbledon. Peter is married with 3 children and loves spending quality time with them– even though he feels his children are growing up too fast!

Dr Lara Kriek

Dental Surgeon

GDC Reg: 243998

Lara Kriek has been a hugely successful addition to the team here at the Castleton Dental Practice, having joined in April 2021. We are thrilled that Lara is working exclusively with us. We expect that this will be welcome news to Lara’s patients, as the feedback we have received is faultless. Lara is a prime example of setting exemplary standards in regard to patient care and efficiency, with a calm and gentle approach, tailoring each treatment plan individually, contributing to a trustworthy patient-dentist relationship. Lara has completed a Masters in Restorative and Aesthetic Dentistry with Distinction, from the University of Manchester, enabling her to improve patient’s confidence through their smile. This paired with her success in being a Elite Invisalign provider, contribute to her transformational smile makeovers. During her studies, Lara was awarded the Academy of Operative Dentistry, for consistent excellence in clinical dentistry. She also received the Alfred Woodhouse prize for academic excellence, awarded by Guys Kings St Thomas. Lara was also nominated by the Private Dentistry Awards as a finalist for the Best Young Dentist in the Southeast. In her spare time, Lara has recently developed a love for woodwork, undertaking workshops to widen her knowledge in carpentry. Lara also enjoys keeping fit at the gym and loves nothing more than spending time with her family.  We are incredibly pleased to welcome Lara to our team.

Dr Lovepreet Heer

Dental Surgeon

GDC Reg: 284623

Lovepreet Heer is the newest member of our clinician team, joining in September 2023. Having graduated with her BDS qualification in 2019 from Barts and the London school of medicine and dentistry she has since been on a path to enhance her skills, as well as enrolling in postgraduate studies, whilst practicing dentistry. Her calm and welcoming nature allows her to quickly build rapport with patients and put them at ease.Lovepreet is trained in advanced facial aesthetics and medical grade skincare, which allows her to fulfil her ethos of holistic patient care and restore patients confidence and smiles.

Some of her advanced qualifications include:

  • Derma Medical beginner + advanced botox + fillers course – Oct 2020
  • BTC Luminary Course – advanced botox + fillers 2021-2022
  • Profhilo
  • Obagi Medical grade Skincare

Dr Caoimhe Doherty

Implantologist & Oral Surgeon

GDC Reg: 176521

Caoimhe Doherty joined Castleton in 2021 and has a special interest in oral surgery, intravenous sedation, and implants, and is currently working two days a month with us, with her main focus being implant and extraction cases. Caoimhe graduated from Queens University Belfast in 2009 with distinctions. She then went on to undertake 3 years training in Oral and Maxillofacial surgery before going into general practice. Caoimhe has a Master’s degree in implantology and continues to expand her knowledge, in order to provide the most innovative treatment to her patients. In her spare time, Caoimhe enjoys travelling to experience different food and culture, especially to countries where she can bring a snowboard or kayak.

Dr Nancy Girgis

Dental Surgeon with Special Interest in Periodontology

GDC Reg: 224329

Dr Nancy Girgis graduated in 2000 from the University of Ain Shams in Egypt, with awards in General Medicine, General Surgery and Operative Dentistry. Nancy is an experienced Dentist with over 20 years of clinical experience and 10 years of academic experience in the UK. Over the years, she has covered different roles within the dental profession, both clinical as a General Dentist and academic as a Senior Honorary Lecturer. Nancy has recognised the importance of periodontal health and how much it has an influence on her patients’ quality of life. She developed a passion for treating all forms of gum disease and this led her to start her Masters degree in Periodontology at the Eastman Dental Institute, the world-leading, academic centre for postgraduate dentistry and translational research, based in London UK. Her clinical expertise includes the diagnosis and treatment of periodontal and peri-implant diseases. She provides an array of different treatments that could prevent the loss of teeth as a result of gum disease. Currently, she is training to enhance her skills in plastic periodontal and peri-implant surgery such as the treatment of gum recession, and in regenerative periodontal treatments. Nancy’s approach to care is to focus on the patient’s wellbeing and long-term interests. She will consult her colleagues and wider experts to ensure optimal treatments. Nancy considers trust a primary driving factor in her ethical approach to treatment.

Andrea Jay

Dental Hygienist

GDC Reg: 4125

Meet Andrea Jay, our longest serving hygienist at the practice, having started with us in 2007.

She qualified from Birmingham Dental School in 1991, and was awarded the Ash Instruments/Dentsply Prize for The Best Clinical Performance. She lives locally with her husband and 2 grown up daughters.

She is a member of the British Society of Dental Hygienist and Therapists and The British Society of Periodontology.

She enjoys keeping up to date with CPD and attending lectures. She has thoroughly enjoyed learning the new latest in EMS AirFlow technology which is now on offer here at Castleton. She has a non lecturing, friendly approach when treating her patients here at Castleton. She enjoys keeping fit with pilates and “slow jogging” 5K regularly around her local area! Cooking and gardening also keeps Andrea busy now her 2 daughters have flown the nest.

Katy Gandhi

Dental Hygienist

GDC Reg: 6541

Katy Gandhi is one of our hygienists here at Castleton. Katy qualified as a hygienist at Cardiff Dental Hospital, University Hospital of Wales in 2004. She joined Castleton Dental Practice in 2014 and has a special interest in patients with periodontal disease, dental implants and those undergoing orthodontic treatment. She provides individually tailored oral health advice in a relaxed and friendly manner and keeps up to date with current General Dental Council requirements for continued professional development. She is a member of the British Society of Dental Hygiene and Therapy.

Lucy Rogers

Dental Hygienist

GDC Reg: 2183

We are thrilled to announce that our highly skilled hygienist, Lucy Rogers, has returned to our dental team. Lucy is a vital member of our team and brings a wealth of knowledge and experience to our practice.

With her expertise in dental hygiene, Lucy is dedicated to helping our patients maintain healthy teeth and gums through regular cleanings and preventative care. She works closely with our dentists to provide personalized treatment plans that address each patient’s unique needs.

Lucy is known for her gentle and thorough approach, and our patients have come to appreciate her kind and caring demeanour. Her passion for oral health and commitment to patient care have made her a valued member of our team, and we are delighted to welcome her back.

Holly Bolsover

Practice Manager

GDC Reg: 119150

Holly qualified as a dental nurse in 2005 and has years of dental experience on her side – with dental nursing and reception duties both coming naturally to her, she is a favourite amongst our clinicians for her efficiency and dedication in practice.  Holly has recently been made Castleton’s Practice Manager! She has been appointed to this role because she approaches every patient situation with empathy and kindness and always goes above and beyond for every patient. When Holly isn’t spending time with her husband and children, she likes to sing and act, enjoys keeping fit at the gym and loves to socialise with friends.

Molly Marshall

Registered Dental Nurse / Receptionist

GDC Reg: 280931

Molly Marshall has been part of our team here at Castleton since October 2021 and is a highly registered dental nurse. Despite loving her nursing career, Molly can be found both in surgery and on the reception desk, helping out in every way she can. Molly trained to be a dental nurse at the Dental Hospital in Bristol in 2016, learning every aspect of dental nursing and worked there for two years prior to entering general practice. Before joining our team, she worked at a mixed NHS practice and private practice in Bagshot and gained knowledge in implants.

 Molly has just bought her first house with her partner and spends her spare time renovating it and socialising with friends.

Neave Barlow

Registered dental Nurse/ Receptionist

GDC Reg: 300249

Despite being a new member of the team, Neave has settled into the practice very well and we are delighted to have her. Neave qualified as a dental nurse in 2022 and holds a Diploma in Dental Nursing Level 3 QCF City & Guilds 2021. Neave can be found both in surgery and at reception, helping in all areas of the practice.

Outside of work, Neave enjoys looking after her baby boy.

Nicola Garwood

Registered Dental Nurse

GDC Reg: 152002

Nicky is our longest serving nurse, who has got years of dentistry experience behind her.
Nicky joined Castleton in 2013, but has been a dental nurse for 35 years, meaning she has worked with many dentists in her career and now continues in this style by mostly working with Peter and Andrea.
Living locally, Nicky fills her free time with catching up with her two grown up daughters, who are both nurses. Nicky also enjoys cooking and travelling.

Geraldine Coomber

Lead Dental Nurse

GDC Reg: 285116

Geraldine Coomber is our lead dental nurse here at the practice. She is a registered general nurse in the Philippines as well as being a dental nurse. We are excited to announce that Gerry gained a diploma in implant nursing in 2023, which she puts to use, working alongside our lovely Caoimhe. 

Gerry is also sedation trained, enabling her to work closely with our nervous patients, helping to put them at ease. Gerry is always working her hardest to ensure a seamless working environment for all staff. In her spare time, Gerry likes attending comedy nights with her husband.

Kim Boswell

Registered Dental Nurse

GDC reg: 156156

Kim Boswell is one of our registered dental nurses here at Castleton. She joined us in October 2021 as she moved down to Farnham from London. As she is used to the fast-paced dental world in Central London, Kim is an efficient and well organised individual, which resonates in the way she works. You will usually find Kim in the hygienist surgery nursing with our lovely hygienist Katy. In her spare time, Kim loves socialising with friends and enjoying days out with her two sons.

Kaytie Green

Registered Dental Nurse

GDC Reg: 314601


Kaytie has joined Castleton after gaining experience as a receptionist at a practice in Sandhurst, during her time there, she grew increasingly interested in the dental nursing side of the industry and has now completed her training here at Castleton. She has been a valued member of our team since January 2021. We are excited to announce that Kaytie completed her Diploma in Dental Nursing in July 2023. In her spare time, Kaytie enjoys spending time with her family, she has twin daughters, who inspired her to start her own bow making business and she enjoys nothing more than walking her 2 dogs: Perry and Winnie, on the beach.

Sumi Gurung

Registered Dental Nurse / Receptionist

GDC Reg: 297268

Sumi Gurung is the newest member of our team here at Castleton and qualified as a registered dental nurse in 2021. You will see Sumi both in surgery and on the desk, helping in every way she can.

In her spare time Sumi enjoys baking and water painting.

In Demand Services

Here at Castleton, we offer highly sought after services including Invisalign, composite bonding, implants, Airflow hygiene treatments (GBT), and many more.

Latest Innovative Technology

Our new iTero scanner, originated in San Jose, California, is our latest technological advancement in the practice. This method enables us to minimise patient discomfort by almost eliminating the need for impressions, unlike previous technologies. This time-saving and safe process, enables you to see your digital dental images.

The Best Qualified Team

Every member of the team here at Castleton, including our receptionists, are fully qualified and registered with the General Dental Council, ensuring a seamless experience throughout your dental journey.

Why Choose Us?


Here at Castleton Dental, we pride ourselves on efficiency and competence. Enabling all patients’ to have a comfortable, satisfiable and stress-free experience with every visit.


No matter the appointment, whether it be a routine checkup, hygiene appointment or as part of a detailed treatment plan, each and every visit to Castleton Dental will be personally tailored to your every need and requirement.


Despite us being proud of our established practice and its staff, this is only reflected in our Facebook and Google reviews, which is how most of our prospective patients’ find us.

Call Us: 01252 715576

11 Castle Street



Working Hours

Mon – Thurs – 08:30am – 05:15pm

Fri – 08:00am – 01:00pm


Free Invisalign Consultation

Available on request