(AU)Arkiteco - Specialises in ecologically sustainable houses.
Alastair Binnie - Specialises in energy efficient buildings and sustainable development.
Cob Cottage Company - Researches sustainable building around the world, adapts traditional knowledge to local conditions, and trains people in its applications.
Environmental Design Consortium (EDC) - Providing residential and commercial architectural services with a specialisation in green, sustainable or ecological building methods and materials.