Head of External Affairs and Communications

Stephen joined the Executive Team of ViiV Healthcare in 2017 as the Head of External Affairs and Communications. ViiV Healthcare is majority owned by GSK, with Pfizer Inc. and Shionogi Limited as shareholders. He is responsible for the company’s strategic approach to communications, government affairs, global health, investor relations and community partnerships. Stephen has a specific focus on improving outcomes for children living with HIV. He is also accountable for the continued modernisation of employee engagement across the HIV business.

Prior to this, Stephen held a number of senior leadership roles within GSK’s pharmaceuticals, vaccines and consumer healthcare businesses, living and working in Europe and the US. He also worked to improve access to medicines and vaccines in the world’s poorest countries, helping to implement the introduction of pneumococcal and rotavirus vaccines into sub-Saharan Africa.

Before GSK, Stephen worked for Shell International, as well as for a communications consultancy, after three years as a journalist for the BBC.

He holds a Bachelor of Arts degree from Leeds University in International History and Politics and a Postgraduate Diploma in Broadcast Journalism from Cardiff University


Our Executive Team

Harmony Garges, Chief Medical Officer at ViiV Healthcare
Dr Harmony Garges

Chief Medical Officer

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Kimberly Smith, Head of Research and Development, ViiV Healthcare
Dr Kimberly Smith

Head of Research and Development

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Lynn Baxter, Head of North America, ViiV Healthcare
Lynn Baxter

Head of North America

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Neil Wilkinson, Chief Financial Officer
Neil Wilkinson

Chief Financial Officer

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Cheryl MacDiarmid, Head of Global Commercial Strategy, ViiV Healthcare
Cheryl MacDiarmid

Head of Global Commercial Strategy

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Andrew Stewart, General Counsel and Chief Compliance Officer, ViiV Healthcare
Andrew Stewart

General Counsel and Chief Compliance Officer

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Stephen Rea, Head of External Affairs and Communications ViiV Healthcare
Stephen Rea

Head of External Affairs and Communications

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Lauren Carey, Head of International
Lauren Carey

Head of International

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We are ViiV Healthcare: 100% dedicated to HIV medicines and research and focused on people living with HIV and AIDS.

Together we are engaged in the HIV response throughout the world, supported by a team of over 1,100 dedicated ViiV Healthcare staff working across the globe.

Discover more about who we are, the work we do and what we're doing to advance HIV science, support the delivery of HIV treatment and care; and work with partners to address the stigma and discrimination faced by people living with HIV.


Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly via the Yellow Card Scheme at or search for MHRA Yellowcard in the Google Play or Apple App store. By reporting side effects, you can help provide more information on the safety of this medicine.

If you are from outside the UK, you can report adverse events to GSK/ViiV by selecting your region and market, here.