Changes made by Air Quality (Miscellaneous Amendment and Revocation of Retained Direct EU Legislation) 2018
S.I. 2018/1407
Made to Commission Implementing Decision of 28 February 2012 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for iron and steel production (notified under document C(2012) 903) (2012/135/EU)
From legislation.gov.uk's record of changes, the official one: see it there.