Mark has been chief executive of Environmental Standards Scotland since June 2022.

Immediately before joining Environmental Standards Scotland, he worked for Audit Scotland in a range of senior roles, latterly as an audit director. His responsibilities included leading work in the justice and environment sectors, on the implications of withdrawal from the European Union and on engagement with the Scottish Parliament.

He previously worked for the Scottish Parliament as a clerk to two different committees. Prior to this, he worked for the Scottish Environment Protection Agency and the Natural Environment Research Council where he was involved in the governance of both organisations.

He has an undergraduate degree from the University of Cambridge, a Ph.D in geochemistry and climate change from the University of Bristol and an M.B.A. from the University of Edinburgh.