Ersuchen um Vorabentscheidung, vorgelegt durch Beschluß des High Court of Justice, Queen's Bench Division, vom 3. Mai 1996 in dem Rechtsstreit The Queen gegen Ministry of Agriculture, Fisheries and Food und The Commissioners for Customs & Excise, ex parte: The National Farmers Union, David Burnett and Sons Limited, R. S. and E. Wright Limited, Anglo Beef Processors Limited, United Kingdom Genetics (eine Firma), Wyjac Calves Limited, International Traders Ferry Limited, MFP International Limited, Interstate Truck Rental Limited und Vian Exports Limited, Streithelfer: Anglo Dutch Meat Exports Limited, Beck Food Group Limited, First City Trading Limited, Weddel Swift Limited, Carrex August Limited, Meatal Supplies (Wholesale Meats) Limited, Meat Marketing Services (UK) Limited, NWL (Ireland) Limited, Hibernia Foods PLC, D. T. Duggins Limited, Swallow Foods International Limited und The British Association of Sheep Exporters (Rechtssache C-157/96)