The leading public body for protecting and improving the environment in England and Wales . To make sure that air, land and water are looked after by everyone in today's society, so that tomorrow's generations inherit a cleaner, healthier world .

The Scottish Executive is the devolved government for Scotland . It is responsible for most of the issues of day-to-day concern to the people of Scotland , including health, education, justice, rural affairs, and transport.

The Environmental Protection Agency (EPA) is an independent public body established under the Environmental Protection Agency Act, 1992. The other main instruments from which it derives its mandate are the Waste Management Act, 1996, and the Protection of the Environment Act, 2003. The EPA has a wide range of functions to protect the environment.

Transport Canada’s mission is to develop and administer policies, regulations and services for the best transportation system for Canada and Canadians - one that is safe and secure, efficient, affordable, integrated and environmentally friendly.

The site seeks to provide a gateway to the latest information on Strategic Environmental Assessment (SEA) and Sustainability Appraisal (SA) where applicable e.g. in Town and Country Planning. It is aimed primarily at plan/programme authorities and others involved in implementing the requirements of the SEA Directive and UK Regulations .