Kieron is the Chair of the Impact Investing Institute. He joined the Institute as CEO following seven years as Chief Executive of Guy’s & St Thomas’ Foundation, one of the world’s oldest foundations, and itself a pioneer in incorporating impact investment into the investment strategy of its £1 billion endowment. At Guy’s & St Thomas’, Kieron has led some of the UK’s most innovative and impactful alliances to reduce health inequalities.

Kieron was an early leader in impact investing, having joined Guy’s & St Thomas’ from the Cabinet Office, where he was Director of Impact Investment and the key architect, starting in 2012, of the UK Government’s strategy to make the UK a global hub for impact investing. That catalytic work included the creation of Big Society Capital, the world’s first wholesale social investor, and putting impact investing on the agenda of the G8 during the UK’s presidency, in particular through the creation of the Social Impact Investment Taskforce. Before joining the Cabinet Office, Kieron served in No.10 Downing Street, the Department for Business, the Foreign and Commonwealth Office and the Prime Minister’s Strategy Unit. He started his career as a strategy consultant at The Boston Consulting Group in New York. 

Kieron is a Governor of the Southbank Centre, a Trustee of the Design Council, and the Chair of the Long-term Investors in People’s Health programme, a $7 trillion global alliance of institutional investors. He is also a World Economic Forum Young Global Leader.