“that authority”

1. The Electrical Equipment (Safety) Regulations 2016 SI
2. Environmental Protection Act 1990 Act
3. The Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016 SI
4. The Gas Appliances (Enforcement) and Miscellaneous Amendments Regulations 2018 SI
5. The Lifts Regulations 2016 SI 2 definitions
6. The Personal Protective Equipment (Enforcement) Regulations 2018 SI
7. The Pressure Equipment (Safety) Regulations 2016 SI
8. The Pyrotechnic Articles (Safety) Regulations 2015 SI
9. The Services of Lawyers and Lawyer’s Practice (Revocation etc.) (EU Exit) Regulations 2020 SI
10. The Simple Pressure Vessels (Safety) Regulations 2016 SI 2 definitions

Definitions are taken from the instruments as published on zoomLaw, for guidance only. Check the instrument itself for its scope and any amendments.