 It was based upon meticulous research and cogent argument, and he drew upon his professional expertise, honed at IBM, in the technological management of transport issues.In later years, he remained highly motivated by his environmental convictions and continued to campaign for a sustainable transport policy.In 1995, the year after the Twyford cutting opened to traffic, he advised a group of campaigners who were taking European legal action to stop construction of the Newbury bypass, another controversial road scheme.