These Regulations amend the Energy Performance of Buildings (England and Wales) Regulations 2012 (S.I. 2012/3118) (“the principal regulations”), which implement Directive 2010/31/EU of the European Parliament and of the Council on the energy performance of buildings (recast) (OJ No L 153, 18.6.2010, p. 13).
Link: The Energy Performance of Buildings (England and Wales) (Amendment) Regulations 2018
Source: Legislation .gov.uk