http://www.legislation.gov.uk/uksi/1985/970/madeThe Offshore Installations (Safety Zones) (No. 52) Order 1985enKing's Printer of Acts of Parliament1985-07-04 The Offshore Installations (Safety Zones) (No. 52) Order 1985InstrumentThe Offshore Installations (Safety Zones) (Revocation) (No. 42) Order 1986