Jonathan Willis commenced his career as an engineer with London Underground. After obtaining an MSc in transport planning he worked for the Greater London Council and on its demise for London Transport and its successor Transport for London. As Head of Strategy and Planning he was responsible for the planning and evaluation of Croydon Tramlink, four Docklands Light Railway projects, the Jubilee Line Extension and as Head of Planning, for the Crossrail/Elizabeth Line. He is now retired living in Berkshire.