R (HS2 Action Alliance Ltd) v Secretary of State for Transport

R (HS2 Action Alliance Ltd) v Secretary of State for Transport [2014] UKSC 3 is a UK constitutional law case, concerning the conflict of law between a national legal system and European Union law. == Facts == The HS2 Action Alliance, Buckinghamshire County Council, Hillingdon London Borough Council, and Heathrow Hub Ltd claimed that the Secretary of State should have done a strategic environmental assessment under Directive 2001/42 before the government's "Next Steps" Command Paper on HS2.

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