http://www.landmarkchambers.co.uk/news.aspx?id=3858
Hearing of a case brought by HS2 Action Alliance which claims that the Government has breached the Aarhus Convention
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(From Wikipedia) The Aarhus Convention grants the public rights regarding access to information, public participation and access to justice, in governmental decision-making processes on matters concerning the local, national and transboundary environment. It focuses on interactions between the public and public authorities.