He believes to achieve a sustainable architecture a continual knowledge transfer between practice, research and teaching is required. In 1998 Gary joined Hopkins Architects in London as a project director and environmental consultant, focusing on sustainable school, office and housing schemes. He joined Bennetts Associates’ Edinburgh office in 2006 and was a prominent addition to the firm’s environmental expertise. During 2010 Gary was an Associate Architect with Atkins in Glasgow where he led the Design of the £250m City of Glasgow College new campus.