THE OPERATION OF THE EGG CONTROL AND MARKETING IRELAND. SCHEME IN NORTHERN The scheme as operated in Northern Ireland differs in some material respects from that operating in Great Britain. 1. In Northern Ireland all producers of eggs are subject to the scheme. It is an offence for any producer, no matter how small, to sell eggs other than to the Ministry of Agriculture for Northern Ireland. This provision ensures that all eggs go through the packing stations and is of very great assistance in preventing the development of a bl###ck market.