http://www.legislation.gov.uk/nisr/1985/2/madeThe Seed Potatoes (Amendment) Regulations (Northern Ireland) 1985Government Printer for Northern Ireland2016-12-22SEEDS The Seed Potatoes (Amendment) Regulations (Northern Ireland) 1985RegulationsSeed Potatoes Regulations (Northern Ireland) 2001 (revoked)reg. 24 Sch.10reg. 1(1)