Mark has had a career in local government including as Finance Director at Oxford City Council and the Local Government Association where he represented English councils on financial issues. Mark chaired the Oxfordshire Credit Union for ten years, he chairs Westmill Wind Co-op and was a founding director of Westmill Solar Co-op.

As a non-executive director at Energy4All, Mark represents member cooperatives and leads on international relations. In 2017 Mark was elected to the eight-person board of “REScoop” - which represents renewable energy cooperatives across Europe. He is a director of MECISE, which is a Belgian co-operative developing financing mechanisms for European community energy, and President of REScoop, which provides services for organisations who are working in community energy across Europe.

Mark has previously been a non-executive director of: Community Energy England, Low Carbon Hub, Ethical Property Company and Soha Housing. He is also a fellow of the RSA.