Martin is one of the leading UK architects specialising in the design of bridges and transport infrastructure and is a Fellow of the RIBA and the Institution of Civil Engineers and an Honorary Fellow of IStructE. He founded international bridge designers Knight Architects in 2006 and his award-winning practice has completed more than sixty bridges in the UK and internationally. Current projects include major schemes in the UK, Germany, France, US, Canada and New Zealand as well as three of the largest Active Travel projects in the Nordics, in Sweden, Norway and Finland. Their approach to design has been hailed as exemplary by bodies including the National Infrastructure Commission and the Design Council in the UK and Baukultur Bundesstiftung in Germany. Martin frequently serves as a client and industry advisor, including as member of the Design Review Panel of the Design Commission for Wales since 2006. He was appointed a Design Council Ambassador in 2021 and is a judge for the BCIA Awards and the Structural Awards.