The Control of Major Accident Hazards Regulations 2015 (S.I. 2015/483) (“the 2015 Regulations”) implemented Directive 2012/18/EU of the European Parliament and of the Council on the control of major accident hazards involving dangerous substances, amending and subsequently repealing Council Directive 96/98/EC (O.J. No. L 197, 24.7.2012, p.1) (“the Seveso III Directive”).