Our Story

Sir Martin was Founder and CEO of WPP for 33 years, building it from a £1 million ‘shell’ company in 1985 into the world’s largest advertising and marketing services company. When Sir Martin left in April 2018, WPP had a market capitalisation of over £16 billion and revenues of over £15 billion.

Sir Martin supports a number of leading business schools and universities, including his alma maters, Harvard Business School and Cambridge University, and a number of charities, including his family foundation. He has been nominated as one of the TIME 100: The Most Influential People and received the Harvard Business School Alumni Achievement Award.

Radhika Radhakrishnan joined S4Capital as an Executive Director and Group Chief Financial Officer in May 2025.

Qualifying as a Chartered Accountant with Ernst & Young in London, Radhika’s career spans Group M/WPP where she was Global Chief Finance Officer Wavemaker and Bartle Bogle Hegarty, Publicis where she held the dual roles of Global Chief Financial Officer and Chief Financial Officer BBH London.

Prior to her tenure at BBH, she was Chief Finance Officer at 20th Century Fox UK and Chief Financial Officer Hachette Filipacchi UK now Hearst Magazines.

Alina Kessel has had a 25+ year career in advertising and brand building, having worked in the US, Australia, Germany and the UK. She was Global Client Leader at WPP, CEO of DDB Tribal Group and Grey Advertising in Germany and served as a Non-Executive Director on the board of DS Smith, a FTSE 100 packaging company. Currently, Alina is a NED at Y TREE, a wealth tech advisory platform and a Senior Advisor to HH Global, a marketing activation firm.

Colin brings decades of experience in both management and governance roles including Non-Executive Chairman of Premier Foods plc, Chief Executive of Essentra plc and 15 years of experience as Chief Financial Officer of both Reckitt Benckiser plc and Aegis plc.

He has served as a non-executive director on the boards of major UK listed businesses including Amec Foster Wheeler, WPP, Cadbury, Imperial Brands and easyJet.

Rupert qualified as a Chartered Accountant with Peat Marwick Mitchell in 1972. He joined Samuel Montagu in 1977 to pursue a career in corporate finance. Over a period of 34 years Rupert advised major corporate clients on mergers, acquisitions, IPOs and capital raisings, including advising WPP on its acquisitions of JWT, Ogilvy & Mather and Cordiant, together with related funding.

He was appointed a director of Samuel Montagu in 1982 and was Head of Corporate Finance between 1993 and 1998.

He was a Managing Director of HSBC Investment Banking until his retirement in 2011.

Margaret is President and CEO of Asia, Informa Markets, overseeing its businesses in mainland China, Japan, India, Korea, Hong Kong and ASEAN, a portfolio of more than 250 brands, which include industry-leading exhibitions and digital services across 13 countries. Margaret joined UBM in 2008, before its combination with Informa in 2018. In the last 12 years, she has spearheaded multiple milestones in key market sectors and successfully grown the business through organic development and strategic partnerships.

Prior to this, she held senior positions at TNT and Global Sources, and is the co-founder of the leading online expat community ShanghaiExpat.com. Margaret is a member of the Common Purpose Dao Xiang advisory board and received an MBA degree from Oxford Brookes Business School.

Daniel Pinto is the Founder, Chairman and CEO of Stanhope Capital, the global investment management and advisory group overseeing approximately US$30 billion of client assets. He has considerable experience in asset management and merchant banking having advised prominent families, entrepreneurs, corporations and governments for over 25 years.

Formerly Senior Banker at UBS Warburg in London and Paris concentrating on mergers and acquisitions, he was a member of the firm’s Executive Committee in France. He was also Chief Executive of a private equity fund backed by CVC Capital Partners. Daniel founded the New City Initiative, a think tank comprised of the leading independent UK and European investment management firms. He is the author of Capital Wars (Bloomsbury 2014), a book which won the prestigious Prix Turgot (Prix du Jury) and the HEC/Manpower Foundation prize.

Miles spent almost 35 years at Ogilvy, ultimately as its global Chairman and CEO. He is currently the Warden of New College at Oxford University. Miles joined what was then the ‘advertising’ business from Oxford in 1973, eventually moving to Ogilvy & Mather. After a period in the Asia-Pacific region based in Hong Kong, and working especially in China, he moved to New York in 2008 as Chief Executive, then Chairman of Ogilvy & Mather Worldwide.

From then until 2016 Miles led a period of strong client growth and creative success. In 2016, Miles returned to his Alma Mater of New College in Oxford, where he is Warden. He is President of the Oxford Literary Festival and Chair of the Oxford Bach Soloists, amongst other voluntary activities. Miles is actively engaged in ESG efforts, maintaining oversight of S4Capital's ESG performance and instrumental in the development of disruptive and innovative ESG initiatives.

Christian Juhl is a highly regarded media and technology executive with more than 25 years' experience in commerce, advertising, media and data. He served as Global CEO of GroupM from 2019 to 2024 before moving into the role of President, Corporate Development at WPP. He previously served as CEO of Essence and a longtime Razorfish leader. He is known for driving digital transformation, data-led media and AI innovation across WPP’s global media business.