These Regulations amend the Simple Pressure Vessels (Safety) Regulations 2016 (S.I. 2016/1092), the Electrical Equipment (Safety) Regulations 2016 (S.I. 2016/1101), and the Pressure Equipment (Safety) Regulations 2016 (S.I. 2016/1105), each of which made provision implementing harmonised European Union laws in their respective subject area.