Amanda Barrett joined the business in 2019 and is an accomplished business development professional with a strong focus on building lasting partnerships and uncovering new growth opportunities. As Senior Business Development Manager, she works closely with brokers to understand their clients’ needs and deliver tailored solutions that drive value and long-term success, enabling her to make a meaningful and measurable impact on business growth.

With extensive experience in relationship management and strategic planning, Amanda is skilled at identifying emerging opportunities and turning them into measurable outcomes. Her proactive approach, commercial insight, and commitment to excellence make her a trusted partner to both clients and colleagues alike, consistently contributing to her strong track record of success.

Kieran Brown is Managing Director of SIP Medical Family Office UK, where he leads the firm's strategy, growth and regulatory responsibilities in the UK market. Having played a key role in establishing the UK business, he has overseen its development from a start-up operation into a thriving London-based team serving high-net-worth individuals, families and their advisers.

With more than two decades of experience across international health insurance, healthcare and client services, Kieran is widely respected throughout both the insurer and intermediary communities. He is passionate about bringing together expertise, innovation and trusted partnerships to deliver integrated healthcare solutions tailored to the evolving needs of affluent clients.

As a strong advocate for collaboration across the industry, Kieran is committed to advancing the Medical Family Office proposition and helping shape the future of private healthcare services and support.

At the beginning of his career, Kevin worked for Swiss Re in the large corporate direct insurance division called Swiss Re Corporate Solutions. A personal incident of medical malpractice has made him find his purpose in health management. Today, Kevin is the CEO at SIP Medical Family Office. For over 25 years, individuals, families, and companies have been relying on SIP’s expertise to protect their health around the world. Founded as an International Private Medical Insurance advisor, SIP has developed into what is today known as a Medical Family Office. Combining the expertise from private medical insurance with a holistic approach towards proactively planning one’s health, it has been SIP’s mission to protect people’s health since 1997.

While International Private Medical Insurance remains an important focus, SIP has developed a Medical Concierge proposition to plan people’s health strategically and ensure better outcomes in acute situations. This ranges from Privileged Healthcare to Preventive Medicine, Longevity, Medical Records Management, and more. 

Thibault Demoures is an experienced healthcare executive with over 15 years of leadership in insurance, health solutions, and market expansion. As the Global Head of the Individual Segment at AXA Global Healthcare, focusing on growth strategies and tailored customer solutions. He has a proven track record in driving market development, forging strategic partnerships, and enhancing customer experiences across Asia and Europe. With expertise in business development, healthcare journeys, and cross-functional collaboration, he is passionate about transforming healthcare services. Fluent in French, English, and conversational German, Spanish and Chinese, he holds advanced degrees from Tongji University and Euromed Marseille. 

Having spent over 30 years in the financial services industry, Adam has an impeccable track record in multi-jurisdictional client service. He works with ultra-high net worth families around the world to find the most secure financial structures. 

Adam qualified with the Institute of Financial Services and is a member of the Society of Trust and Estate Practitioner (STEP). 

 Adam specialises in UK non-domicile clients, Asian, CIS, and Indian families and is a specialist in protective family office structures and dynastic planning, and strongly believes in the value of long term relationships and goals within the wealth planning environment. 
 
 Since 2012 he has been recognised as a leading figure in the trust industry by Citywealth and included in the Trustee honours list. Adam was recognised by ‘Global Elite Recommends’ category within the directory, allowing lawyers to nominate their most highly-rated partners including accountants, asset managers, family offices and trustees.

Dr Mayoni Gooneratne is a physician, educator, TEDx speaker and healthcare entrepreneur recognised internationally for pioneering a preventative, personalised approach to health, longevity and women’s medicine. Following a successful career as an NHS colorectal and pelvic floor surgeon, she transitioned into functional and longevity medicine with a mission to transform healthcare from reactive disease management to proactive health optimisation.

She is the Founder and Medical Director of SkinFIT and Human Health, both are award-winning clinics specialising in medical aesthetics, and women’s metabolic, hormonal and longevity health, and the Founder of Human Health Professionals, a physician-led education platform dedicated to training healthcare professionals in evidence-based functional medicine, metabolic health and longevity medicine. Through the Certified Longevity Docs™ training programme and the Human Health Professionals membership, she is helping develop the next generation of clinicians equipped to deliver precision, preventative healthcare. 

Dr Mayoni is the Executive Medical Director of PHC (Personalised Health Clinics), where she leads the clinical strategy, governance and development of the organisation’s integrated longevity and personalised healthcare services. Working alongside the executive leadership team, she is responsible for creating innovative clinical pathways, multidisciplinary models of care and preventative health programmes that combine functional medicine, metabolic health, lifestyle medicine and cutting-edge diagnostics.

A passionate advocate for changing the future of healthcare, Dr Mayoni is a highly sought-after international keynote speaker. She has delivered presentations across the UK and internationally on functional medicine, women’s health, metabolic health, aesthetics, regenerative medicine and medical longevity. She is also a TEDx speaker, whose talk challenges audiences to rethink what it means to be truly prepared for the future of health. 

Beyond clinical practice, Dr Mayoni has become recognised for creating educational platforms that bring together global leaders in longevity medicine. She is the Founder, Curator and Chair of the annual Medical Longevity Summit in London, now one of the UK’s leading annual conferences dedicated to evidence-based longevity, preventative medicine and integrative healthcare. She has also curated and chaired international summits, including the inaugural Women’s Health & Longevity Summit in Portugal, helping shape conversations around the future of healthspan medicine. 

She is Vice President and co-founder of the British College of Functional Medicine, where she is committed to advancing education, clinical standards and collaboration among physicians practising functional medicine throughout the UK.

Having completed the Certified Longevity Doctor (CLD) programme, Dr Mayoni integrates the latest evidence in longevity science, genomics, metabolic medicine, nutrition, exercise physiology and precision diagnostics into both her clinical work and educational programmes. Her philosophy is simple: longevity is not merely about living longer, but about extending healthspan - helping people remain healthier, stronger and more resilient throughout every stage of life, and also peakspan - living more of life in optimal health.

Today, Dr Mayoni continues to lead a movement that bridges conventional medicine with the latest advances in longevity science, empowering both patients and healthcare professionals to embrace a future where prevention, personalisation and whole-person care become the new standard of medicine.

Alex Gray is an internationally renowned live MC and television host, recognised for her versatility across a wide range of sectors, including sport, health, finance, and lifestyle. Her presenting work has seen her host for prestigious names such as the BBC, Henley & Partners, QVC, and Red Bull.

Alongside her broadcasting and live hosting career, Alex has become a respected voice within the autoimmune community, speaking at events including the Allergen and Free From Show and the Genesis Health Conference. After appearing as a contestant on the BBC hit show The Traitors, she has also developed a series of talks on the psychology of lying, informed by both her first-hand experience on the programme and her academic training in psychology.

Alex grew up in Cambridge and graduated from University College London with a first-class BSc in Psychology. 

Mark Jackson is the Founder and CEO of Vitaspan, a health-data infrastructure platform designed to unify fragmented medical records into a structured longitudinal health record. Vitaspan enables clinics, physicians, and patients to access a complete health picture while supporting AI-driven risk prediction for preventative medicine. Mark spent more than two decades in global technology leadership, including senior roles at Thomson Reuters, where he built large-scale strategic partnerships with firms such as Microsoft, IBM, and Oracle. His work with Vitaspan focuses on solving one of healthcare’s most persistent problems: the fragmentation of medical data across countries, providers, and systems. This challenge is particularly acute for internationally mobile families.

Mark’s mission is to give individuals true ownership of their health information while enabling physicians to deliver more proactive and personalised care.

Chantal joined SIP Medical Family Office as a Client Advisor in April 2024. As an independent intermediary, specialising in Private Clients and SMEs, she has over 11 years’ experience in the industry looking at both International Private Medical Insurance as well as domestic UK PMI.

Steve Martin has been in the Global Health Insurance Industry for more than 25 years, working for some of the largest companies in the industry. Steve has held various different positions in different regions throughout the world. He has worked for Cigna Healthcare for 10 years now and has significantly grown the Cigna Healthcare Global Individual Health business throughout Europe and the UK with key Broker Partners. Steve lives in Manchester, UK with his wife and 2 children. He is a keen golfer and cyclist (when he gets time!) and enjoys taking his children to their various sports activities at the weekend. 

Matt Piell is the CEO of AllCore360, a global health and wellness technology company focused on advancing neuromuscular activation, recovery, performance, and longevity through innovative movement-based solutions. Under his leadership, AllCore360 has expanded into more than 15 countries with over 200+ clinics and facilities worldwide utilizing the company’s technology to support rehabilitation, proactive wellness, and human performance. Passionate about improving quality of life through science-driven innovation, Matt is committed to helping bridge the gap between healthcare, recovery, and longevity by making advanced neuromuscular technologies accessible to individuals of all ages and mobility levels.

With a Bachelor’s degree in Physical Therapy, Léa specialised in orthopedic and neurological rehabilitation. She began her career in an independent practice, focusing on restoring function and improving quality of life through tailored rehabilitation programs.

She joined Swiss Medical Network in 2017, a leading private medical group in Switzerland, where she initiated and led the development of a rehabilitation application designed to enhance and accelerate recovery following surgery or injury, including complex neurological conditions. She later advanced into the role of International Medical Coordinator, managing and coordinating medical treatments for an international clientele, ensuring a seamless and high-quality care experience.

Now part of SIP Medical Family Office, Léa is dedicated to expanding global access to premium healthcare solutions, driven by her passion for patient wellbeing and excellence in medical services.

Teresa Wighton took up the role of Commercial Director at William Russell in November 2024. With nearly 31 years of experience in the international health insurance industry, Teresa has a proven track record of building high-performing sales teams and driving business growth. She has held senior sales leadership roles at Cigna, Aviva, and Bupa Global, where she spearheaded B2B expansion and led a major sales transformation program.

As Commercial Director at William Russell, Teresa’s focused on expanding our global business, strengthening relationships with key broker partners, and ensuring our direct-to-business segment continues to thrive. She works closely with our underwriting and marketing teams to maintain a balance between growth and long-term sustainability. A passionate leader, she’s committed to fostering a workplace where people feel empowered and engaged - an approach that helped her achieve record-breaking employee engagement scores in a previous role. 

Since joining, Teresa’s energy and ambition is clearly evident. Both as we continue to drive the huge success of our 30-year + history and, as we focus for our next chapter, driving forward our growth ambitions in the international health and protection space and our continued success. 

Beyond work, Teresa certainly enjoys a challenge. She once walked the entire 100-mile South Downs Way in just 6.5 days, studied wine to diploma level with the Wine & Spirit Education Trust (a self-proclaimed “qualified wine snob”), and even braved a zip wire from St Paul’s Cathedral for charity.

William Russell is a UK-based company formed in 1992 to provide international health insurance to individual expatriates in 160 countries. Our plans are underwritten by AWP Health and Life SA, part of the Allianz group of companies.