Zero Energy Design (ZED) provides sustainability consultancy services as one of three complementary and specialist businesses that make up the Silcock Leedham Group. It is a building physics, simulation and sustainability specialist working in all areas of the built environment using thermal simulation and modelling techniques to add value to construction projects. By using building modelling and simulation techniques throughout the design cycle, ZED helps clients improve building performance and enables designers to meet increasingly strict environmental standards. It offers a wide range of high-quality building performance advice, simulation and evaluation, which is complemented by bespoke sustainability and well-being consultancy.