http://www.legislation.gov.uk/nisi/1993/3159/introduction/2010-11-15The Environment and Safety Information (Northern Ireland) Order 1993texttext/xmlenStatute Law Database2016-01-272010-11-15The Environment and Safety Information (Northern Ireland) Order 1993Sch.1Northern Ireland Act 1998s.99Sch.13 para.131993 No. 3159 (N.I. 14)The Environment and Safety Information (Northern Ireland) Order 199316th December 1993