Mark leads the Global Water Business of Arup. He has been with Arup for 35 years. He is an international thought leader on sustainable water management, nature-based solutions and water resilience and has worked around the world. He is on the Organising Committee for Singapore International Water Week and has led the initiative to include Young Water Professionals at Stockholm World Water Week for the last 6 years.

He is an Arup Fellow and Fellow of the Royal Academy of Engineering. He is an Honorary Fellow of the Society for the Environment and Chartered Institution of Water and Environmental Management, a Fellow of the Institution of Civil Engineers and received an Honorary Doctorate from Bradford University for his work on sustainable water management. He was a Royal Academy of Engineering Visiting Professor in Engineering Design for Sustainable Development since 2003. He is also Chair of British Water and former Chair of the Water Industry Forum.