Bill Dunster formed Bill Dunster architects in 1998. In 2002 he completed the award winning BedZED (Beddington Zero Energy Development), the UK's largest carbon neutral eco-community. The architectural practice now has its own range of low carbon construction products - ZEDfabric - and has recently launched the RuralZED zero carbon self build house kit.

Craig Simmons is the co-founder and Technical Director of Best Foot Forward, one of Europe's leading environmental consultancies. In 2005 the company was awarded a Queen's Award for sustainability development. In 2000, Craig co-authored Sharing Nature's Interest - the definitive book on ecological footprinting - and currently sits on the standards committee of the Global Footprint Network.

Bobby Gilbert is a mathematician and chartered engineer with 20 years' experience in designing simulation and monitoring systems. He runs his own building physics consultancy and software development business which recently launched 'Carbon Mixer', a software tool already adopted by many local authorities and consultants. Bobby also teaches building physics and simulation on post-graduate courses.