Guy Clarke is a retired solicitor, having been a partner at Morgan Cole. He was a member of the then Territorial Army for over 30 years and was latterly Chairman of the Reserve Forces' and Cadets' Association for Wales. He was Chair of Tenovus, a member of the Council of Cardiff University, a member of the CBI Council for Wales and a school, college and Institute of Welsh Affairs trustee. He currently advises a number of local charities.
He was appointed OBE for service to the voluntary sector in Wales and is a Deputy Lieutenant for South Glamorgan