Peter Holbrook is CEO of Social Enterprise UK - the national body for social enterprise and a membership organisation. Social Enterprise UK, together with its members, is the voice for social enterprise.

Prior to taking on this role Peter was CEO of Sunlight Development Trust. During his years at Sunlight Peter became one of the country’s most well-respected social entrepreneurs, responsible for the regeneration, through social enterprise, of some of the UK’s most deprived communities. He developed 'project sunlight', based in Gillingham, Kent, from its inception to become one of the country's most high-profile and award-winning 'community anchors’. In 2007, Peter was appointed to be one of the UK's Social Enterprise Ambassadors - a scheme supported by the Cabinet Office and coordinated by Social Enterprise UK. In this role he advocated for social enterprise through lobbying politicians, speaking at events and representing the sector in the media.

In 2010, Peter was appointed as a member of the Cabinet Office’s Mutual’s Taskforce and Trustee of the Big Society Trust (overseeing delivery of Big Society Capital). In 2012, Peter was appointed a member of the EU Social Business Initiative Expert Group and took up the role of Chair of the Social Enterprise World Forum.