Town and country planning – Permission for development. The Court of Appeal, Civil Division, in dismissing appeals against planning enforcement notices, held that, the enactment of the planning enforcement order provisions in the Localism Act 2011 had not removed the effect of the Supreme Court's decision in Welwyn Hatfield Borough Council v Secretary of State for Communities and Local Government [2011] 4 All ER 851 in relation to the time limits for enforcement action, pursuant to s 171B of the Town and Country Planning Act 1990, in cases of deliberate concealment.