About us

Driven by purpose. Powered by people.

We are PortmanDentex. Together we’re on a mission to reimagine group dentistry and wellness.
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Overview

Our purpose is to be the world's leader in dental care.


We have the curiosity to imagine a better way, and the scale and commitment to make it a reality. Today, we support over 370 practices across the UK and Ireland, with more than 2,400 passionate clinicians and 4,500 dedicated practice colleagues providing dental care for 1.5 million patients.

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A message from

Paul Marshall, Group CEO

Since our founding, we’ve been driven by a clear mission: not to be the biggest, but to be the best. Achieving this means partnering with outstanding practices and clinicians, combining our expertise, learning from one another, and growing together. Our ambition is to become the world’s leading provider of dental care.

Today, our journey is enriched not only by the exceptional teams in the UK and Ireland, but also by our colleagues in Norway and Belgium. This international collaboration accelerates our ability to deliver an outstanding experience for our patients and exceptional opportunities for our clinicians. We’re proud to support the remarkable clinicians and practice teams who care for well over a million patients each year. We’re excited to welcome the country’s leading practices - practices like yours - into our group. I hope you enjoy getting to know PortmanDentex and that you’ll join us on this mission.

Values

Our values bind us together and sit at the heart of everything we do. Our behaviours are shaped by them, guiding us on how we do things, how we work together and how we treat each other.

We celebrate individuality, We grow together, We aim higher

Benefits of joining

PD shared vision

Shared vision

We believe in a collaborative approach to dental care, where our practices, clinicians and colleagues are united by shared values, clinical integrity and a commitment to long-term, sustainable growth for the benefit of patients and communities.
PD Collaborative Community

Community integration and support network

We’re proud to support each practice’s unique identity, building on local relationships and community trust – while offering the strength and resources of a wider network to enhance every aspect of care.
PD scale and continued growth

Scale and continued growth

Our continued growth is driven by a commitment to quality, not quantity. Economies of scale mean we can invest more in our clinicians, colleagues, practices and the future of dentistry.
PD Clinical Excellence

Clinical excellence

We pride ourselves on clinical excellence. Through continuous learning, peer collaboration and access to quality resources, we empower every practice to deliver exceptional care. Our dedicated clinical governance team supports practices in upholding the highest standards.
PD long term partnership

Long-term partnership

Whether you’re a clinician, a practice colleague or part of our support teams, we build long-term partnerships founded on respect, support and shared success.

Operational and financial efficiency

Advanced technology solutions, expert marketing support, regulatory and legal expertise, and streamlined operational processes, enable our teams to focus on what matters most: delivering high-quality patient care with confidence and ease.
Team

Our executive team

A group of experienced people and clinicians who care. Where peer support, mentorship, and clinical excellence are at the forefront.
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Sam Waley-Cohen

Founder & Chairman
Sam founded Portman Dental Care in 2008 to transform dentistry for customers, colleagues, and clinicians. In 2023, he advanced this mission by bringing together Portman Dental Care and Dentex Health to form PortmanDentex. Today, Sam drives our overall strategy, working closely with leadership to realise a bold vision for dentistry.
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Paul Marshall

Group CEO
Paul brings extensive senior management experience in the dental and wider healthcare sectors. He believes excellent care starts with a great working environment, which is central to PortmanDentex’s values. Paul champions innovative models that empower clinicians, enhance patient care, and create unique career and economic opportunities across the profession.
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Owen James

Managing Director UK & Ireland
Owen leads the PortmanDentex business in the UK and Ireland – including our practice estate and functional support teams. With a career spanning leadership roles in strategy, retail and the British Army, Owen brings a wealth of experience to the role. Excited about our future, he’s dedicated to bringing together great people and fantastic practices to transform dentistry.
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Louise Oates

Chief Operating Officer
With wide-ranging experience in the dental industry, initially starting her career as a dental nurse, Louise now oversees our strategic and operational functions. She champions a culture of trust, motivation and creativity – believing these are key to innovation and team success.
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Rebecca Sadler

Chief Clinical Officer
Rebecca is a practising dentist with more than 25 years’ experience. A respected clinical leader, she drives quality, governance and policy, while championing clinician development and engagement to help people thrive and reach their full potential.
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Gordon Dunn

Chief People Officer
Gordon drives business growth by creating fulfilling, meaningful roles and is dedicated to attracting and retaining top talent in dentistry. He builds strong, inclusive teams and champions a culture where everyone can be themselves and reach their potential.
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Paul Davis

Group Chief Financial Officer
Paul is a chartered management accountant with 30 years' experience in fast-moving, successful multinational organisations across a range of consumer-facing industries. He’s now using this expertise to drive transformational change across our finance function and the wider business.
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Guy Allen

Chief Information and Transformation Officer
For the past 20 years, Guy’s held leadership roles for large brands. He now oversees our technology teams, which involves supporting our practices and central team with all aspects of technology, as well as implementing new platforms and systems.

Here's our story so far...

Looking back at two leading dental groups. Looking forward as PortmanDentex.

Portman Dental Care

2008

Portman Dental Care founded by Sam Waley-Cohen
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2017

The group grows to more than 50 practices
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2019

With over 100 practices, Portman Smile Clinic launches in 11 locations
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2020

We welcome practices in Belgium, Norway and Isle of Man
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2021

Our first practice in Ireland joins our network
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2022

Two new practices in France join us and we celebrate our 200th practice
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Dentex Health

2014

The Dentex Health journey begins

2017

15 practices have now joined the community
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2018

We more than double in size to over 30 practices
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2020

To support the pandemic we deliver over 1.7m units of PPE
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2021

By the end of the year we're supporting over 100 practices
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2022

Another 40+ new practices join our group
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PortmanDentex

2023

We join forces to become PortmanDentex with over 370 practices
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2024

Over 44 industry awards nominations across our clinicians, colleagues and practices
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2025

We continue to create a sustainable and stronger group for the future

Our other brands in Europe

Odontia

Odontia is a Norwegian network of 35+ clinics built around leading local dentists, united by clinical excellence and shared values. We prioritise patients, support our clinicians, and foster a caring, competent and collaborative culture.

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Mint

Mint is a collective of leading Belgian dental practices that brings together independent dentists while preserving their unique identities. By uniting under one group, Mint empowers each practice to thrive through shared strength and collaboration.

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