Who we are

People are at the heart of everything we do.

values

We Operate with Unwavering Honesty & Integrity

We offer a genuinely personalised approach, providing objective, tailored support so that patients and healthcare practitioners can access the diagnostic and screening services they need with confidence.

Our values shape how we serve our patients, work together as a team, and grow our impact across the communities we support.

Care

At Coleebri, genuine care is at the heart of everything we do. Whether supporting clients, colleagues, or communities, we prioritise well-being, dignity, and kindness. Our commitment to care shapes our services, strengthens relationships, and ensures every interaction is warm, respectful, and meaningful -building trust and loyalty across all of our markets.

Trust

Trust is the cornerstone of our brand. By being transparent, reliable, and true to our word, we create safe spaces for collaboration and growth. Trust enables us to support our patients and teams through change, foster open communication, and deliver on our promise to invest in people today for a thriving tomorrow.

Empowerment

Empowerment means giving people the tools, confidence, and opportunities to reach their full potential. Coleebri is dedicated to nurturing talent, supporting learning, and championing every individual’s journey. By empowering others, we create a ripple effect of positive impact – helping individuals, organisations, and communities flourish together.

Belonging

Belonging is about making everyone feel seen, heard, and valued. At Coleebri, we celebrate diversity and foster a sense of community where every person can contribute and thrive. This inclusive spirit unites our team and clients across borders, strengthens our culture, and ensures that everyone feels at home within the Coleebri family.

With an MSc in Information and Digital Communications and more than 6 years of business management experience, Guillaume has been a first responder and first aid instructor for the French Red Cross. He’s worked as a Phlebotomist and Emergency Nursing Assistant for the NHS, at both Lewisham and Greenwich Trust and University Hospitals Sussex Trust. As a Certified Lead Auditor in ISO 27001 and 9001, he makes sure our clinic is always providing the best services possible, while also often being hands-on and clinically involved.

Guillaume Gual
Registered CLINIC MANAGER & PHLEBOTOMIST

With an MSc in Adult Nursing from King’s College London and clinical experience across a range of London and Sussex hospitals, Dean’s main background is in A&E, qualified to carry out Emergency Department triage. He spent several years with the British Red Cross, taking a leading role at large outdoor events, assessing and prioritising patient care under pressure. His calm, perceptive manner and ease with people are central to how he approaches patient care, always aiming to help people feel understood and well looked after.

Dean Sayer
CLINICAL LEAD REGISTERED NURSE & CO-OWNER
our history

Here's How We Got Started

west sussex

We're Worthing based.

We combine the reliability of a fixed, fully equipped clinic with the reach to serve patients right across the UK. Wherever you’re based, we bring the same standard of care to you, without compromising on quality or convenience.

Why us

We Always Put You First

We take the time to listen, understand your circumstances, and shape our services around what matters most to you – delivering care that feels personal, straightforward, and genuinely on your side.

Driven by a relentless focus on understanding the “why” behind every patient’s needs, Coleebri Health draws on the combined expertise of the wider Coleebri group to uncover, design, and deliver the most impactful diagnostic and screening outcomes for you. Rather than relying on a one-size-fits-all process, we take a hands-on approach—working closely with patients and healthcare practitioners to craft practical, end-to-end pathways tailored to your needs.

 

“At Coleebri, our culture is built on the belief that people come first – we affirm the worth and dignity of every individual and their right to the greatest possible development. We strive for continuous improvement through reason and compassion, knowing that while expertise provides the means, human values must define the ends. ”

Guillaume Gual
FOUNDER & CEO of coleebri group

A responsive and competent team. People you can count on to deliver high-quality work within agreed deadlines. I’ve been working with COLEEBRI for years – we share dozens of clients. A trusted partner and truly quality people.

Jordan Galtier
on trustpilot
Book with us

NHS Requests, Private Blood Tests, Occupational Health, Self- Referrals. Book now.