Mark was educated in the UK and overseas. He trained and practiced as an architect prior to focusing on the unique relationship between light and architecture.
He first met Jonathan Speirs at Lighting Design Partnership before opening his own practice in 1989. In 1993 he formed a working association with Jonathan Speirs and Associates which developed into Speirs + Major. He is the Director responsible for running the day to day activities of the London studio.
Mark has worked on a diverse range of international projects from architectural lighting to urban master–planning and light art and has been honored with a number of national and international lighting awards including the Lighting Designer of the Year 2007. He has also worked on three RIBA Stirling Prize winning projects; Magna Science Adventure Centre, 30 St Mary Axe and the Maggie's Centre in London.