London, United Kingdom, April 2025 – Jacinta Brennan has stepped into the role of Chief People Officer, UK at GroupM, the world’s leading media investment company and a part of WPP. In her new position, she joins the People Executive Team and will play a key role in leading GroupM’s people strategy across the UK, helping to shape a high-performance culture while supporting business transformation and growth.
Prior to this appointment, Jacinta served as Head of HR, Global & Senior Partner at Foster + Partners, where she was responsible for aligning the people and culture agenda with the global growth strategy of the iconic architecture and design firm. She led transformation efforts focused on enhancing the employee experience in a creative and innovative environment.
Before that, she was Head of HR at DNEG, one of the world’s top visual effects and animation studios, where she managed HR operations across the UK and Europe. At DNEG, she was instrumental in shaping people and culture practices for a workforce of over 1,200 employees, playing a strategic role during a period of business expansion.
Earlier, Jacinta held leadership roles at BBH London, where she served as Head of People & Partner – Publicis, and at Kantar Media as Change Consultant – WPP, where she supported major organizational transformations. Her diverse experience also includes time as an independent HR consultant through Strengthscope®, and significant regional HR leadership at Yahoo! Europe and ADC Metrica.
About GroupM
GroupM is the media investment arm of WPP, responsible for more than $60 billion in annual media investment, making it the global leader in media buying and strategy. The company operates through renowned agencies including Mindshare, Wavemaker, EssenceMediacom, T&Pm, and capabilities like GroupM Nexus, Choreograph, and GroupM Motion Entertainment. With its unique combination of scale, technology, and innovation, GroupM delivers sustained value to clients and aims to shape a future where advertising works better for people.
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