Addenbrooke's Hospital faced severe constraints to development from existing access and road capacity problems. Robert Turley Associates, together with Building Design Partnership and Peter Brett Associates, were instructed to provide initial advice on the town planning, site capacity, and transportation issues, respectively, related to the site. The reports were to establish both the potential for further development with the National, regional and Local Cambridge context, and the implications of these for the timeframe for bringing forward a proposal to include hospital expansion, research and development facilities and housing. This resulted in the 2020 Vision.