These Regulations amend the Control of Major Accident Hazards Regulations 1999/743 (“COMAH”), so as to give effect to Directive 2003/105/EC of the European Parliament and of the Council (OJ No L345, 31.12.2003, p.97), amending Council Directive 96/82/EC (OJ No L10, 14.1.1997, p.13) on the control of major-accident hazards involving dangerous substances (to which COMAH gives effect in Great Britain), and to give belated effect to the latter Directive in one respect.