Education for Sustainable Development has been conceptualised in several different ways. The present coalition gov't is reviewing the curriculum. A new curriculum is to be introduced in 2012.
The National Sustainable Schools Framework which introduced eight 'doorways' through which schools may initiate or extend their sustainable activity. Now archived.
The UK Government Sustainable Development Education Panel (SDEP) was formed in 1998 to consider how schools could best actively promote ESD. In order for the complex underlying theory to be understood ESD was broken down in to seven key concepts. SDC disbanded.
A useful overview of the curriculum in the four nations of the UK prepared by Henry Liebling.