Isle of Anglesey County Council v The Welsh Ministries [2009] EWCA Civ 94, [2009] All ER (D) 237 (Feb)
Where an Act has been interpreted in a particular way without dissent over a long period, those interested should be able to continue to order their affairs on that basis without risk of it being upset by a novel approach. That applies particularly in a relatively esoteric area of the law such as the present, in relation to which cases may rarely come before the courts, and the established practice is the only guide for individuals and their advisers.
