The Team

Portrait photo of the dentist Mark Coppen

Dr Mark Coppen


GDC Number: 52688

Mark has worked in Midhurst since 1982. He qualified from Guy’s Hospital in 1978 and worked briefly in Haywards Heath before moving to Midhurst.

He has a wealth of experience in all aspects of dentistry and finds routine family dentistry as satisfying as the complex cosmetic cases. Mark enjoys the variety of being able to care for all types of patient, from the youngest to the oldest and from the confident to the apprehensive.

He regularly attends courses and receives training in all the disciplines of general and aesthetic dentistry.

Mark lives in West Lavington. He has three children. One of them, Edward, qualified as a dentist some years ago. Mark is now very proud to say that in 2021 he entered into a partnership with Edward so they are now joint owners of St.Oswald’s.

Portrait photo of the dentist Ed Coppen

Dr Ed Coppen


GDC Number: 257579

Ed studied dentistry at the University of Liverpool and graduated in 2015. Initially he worked in the oral surgery and maxillofacial department of a hospital, before deciding to focus on general practice. He is grateful to be able to transfer some of his hospital experience to a family practice setting where patients feel more at ease.

To further bolster himself as a rounded and competent general dentist, he has gained additional post-graduate qualifications, including a Post-Graduate Certificate and a Diploma in Primary Dental Care. He is also currently completing Diplomas in Aesthetic and Restorative Dentistry, as well as Digital Dentistry. He is thoroughly committed to bringing high quality and cutting-edge dental care to all his patients.

In 2020 Ed joined St Oswald’s as a partner and thoroughly enjoys working alongside his dad in the running of the practice.

Portrait photo of the dentist Rachael Slocombe

Dr Rachael Slocombe


GDC Number: 76968

After graduating in 1996 from Otago University, New Zealand, Rachael worked in Auckland and Wellington. She then moved to the UK in 1999 and worked as an associate dentist in various practices, before buying Warren House Dental Practice in Cranleigh. After many years running a successful practice, she was sad to sell the practice in 2018 when the other 2 partners retired.

Rachael is proud to provide high-quality dental care with an emphasis on pain-free treatment. She believes in making her patients aware of all the available treatment options to achieve the most satisfactory results for them. As dentistry is a fast-moving field, she makes sure to keep up-to-date with the latest innovations in techniques, products and materials.

In Aug 2020, she has joined St. Oswald’s as an associate dentist. Being based in Midhurst, she loves working close to home where she has two dogs (Jake and Willow) and little boy. She enjoys competing at high level dog agility, adventurous activities, good food, staying fit, and music.

Portrait photo of the dentist Alicia Wimpory

Dr Alicia Wimpory


GDC Number: 85752

Alicia qualified from the University of Bristol in 2005. Before joining St Oswalds, Alicia has spent the past 12 years in practices in Berkshire and Surrey and prior to this, a period of time working in Australia.

In 2010 she was awarded the Diploma of membership of the Joint Dental Faculty of the Royal College of Surgeons of England.

Alicia is a caring, ethical dentist and keeps up to date with the latest skills by continuously attending postgraduate courses. Alicia enjoys all aspects of dentistry and more recently has developed further skills in cosmetic and short term orthodontic treatment. Her warm friendly nature puts nervous patients at ease and she looks forward to giving her patients every confidence in her work.

Alicia lives with her husband and young son and loves keeping active, anything involving the great outdoors!

Portrait photo of the dentist Anne Steele

Dr Anne Steele


GDC Number: 85358

Anne qualified as a Dental Surgeon from Cardiff University in 2005. She is also a qualified Dental Technician and achieved a BSc (Hons) degree in Dental Technology.

With over 15 years of experience, Anne is passionate about delivering high-quality dentistry in a friendly and caring environment. Anne has a sensitive and caring manner which enables her to build an excellent rapport with her patients especially children and nervous patients.

Anne is an experienced Invisalign provider and makes sure she regularly updates her knowledge in all areas of dentistry. She also performs facial rejuvenation procedures using Botox and Fillers.

Anne lives locally with her husband and 2 children. In her spare time, she enjoys outdoor pursuits, travelling and spending time with her family.

Portrait photo of the dentist Ria Mathew

Dr Ria Mathew


GDC Number: 285393

Ria qualified in 2019 from Universidad CEU Cardenal Herrera in Valencia, Spain. Since then, she has worked in well-established private practices in Norfolk and London.

She is a passionate dentist that cares about helping her patients maintain a beautiful and healthy smile, Ria has an eye for detail and believes in minimally invasive techniques to achieve natural results. With her natural compassion and warmth, she is adept at treating nervous patients and children and well-known for building strong rapport and trust with her patients.

Ria has a keen interest in furthering her professional development and has gained additional qualifications in removable orthodontics such as SureSmile and Invisalign, as well as facial aesthetic procedures such as botox and dermal fillers.

In her spare time she enjoys spending time with friends and family, cooking and baking.

* An associate is a self-employed independent contractor responsible for their own clinical work.
Portrait photo of the dentist Ria Mathew

Ria Mathew

GDC Number: 285393

Ria is a qualified dentist, working in that role on a Wednesday and Thursday.

As she has a special interest in gum health (periodontics), she also works as a hygienist for two days a week.

While Ria refines her abilities in periodontics, her patients appreciate the continuity in their care.

Portrait of hygienist Anna

Anna Carvosso-White

GDC Number: 264820

Anna qualified from The University of Portsmouth in 2016 as a second career after serving in the Armed Forces for 13 years. Since qualifying she has worked in several practices across Hampshire and Surrey.

In her free time she enjoys being with her family, walking her dog Lily and can be found open water swimming or sailing.

Kasey Heron

GDC Number: 269104

Kasey started her career in dentistry as a trainee Dental Nurse in 2013, where she later qualified in 2016. She gained experience assisting with Endodontics, Periodontics, and Implantology before starting at the University of Portsmouth in 2018 to study Dental Hygiene and Dental Therapy, obtaining her degree in 2021. In her spare time, Kasey likes spending time with her family and friends, and enjoys paddle boarding.

Today’s dental nurses have to be highly trained and very committed. They must undertake a Diploma and undergo continual further training and assessment.

All our nurses are very approachable and have a wealth of experience. This enables them to deliver calm and empathetic reassurance. They can also offer general oral health advice or explain various treatments.

Portrait of nurse Liv
Portrait of nurse Sophie
Portrait of nurse Jo
Portrait of nurse Jodie

Jane, Amber and Jeanne are the faces (and voices) of St.Oswalds. Their cheerful competence reassures our patients on the phone, welcomes them at the practice.

Of course, their duties go far beyond that. They can explain treatments, find appointments to suit your diary and always offer same day treatments to patients that are in pain.

If there is a matter that is beyond their expertise, they will gladly arrange for a clinically qualified member of staff to call you back.

Portrait of receptionist Jane
Portrait of receptionist Amber
Portrait of receptionist Jeanne