Subject to the dates of phases of application set out in Annex III to this Regulation and without prejudice to F3Article 42 of Regulation (EU) 2018/858, F4the approval authority shall refuse, on grounds relating to the permissible sound level, to grant F2GB type-approval in respect of a type of motor vehicle which does not comply with the requirements of this Regulation.

From 1 July 2016, F5the approval authority shall refuse, on grounds relating to the permissible sound level, to grant F2GB type-approval in respect of a type of replacement silencing system, or components thereof, as a separate technical unit which does not comply with the requirements of this Regulation.

F6The approval authority may grant GB type-approval, under the terms and test procedures of Annex II of Directive 70/157/EEC as it had effect in EU law on IP completion date, to a replacement silencing system, or components thereof, as a separate technical unit intended for vehicles type-approved before the dates of phases of application set out in Annex III to this Regulation.

Subject to the dates of phases of application set out in Annex III to this Regulation, F7the Secretary of State shall, on grounds relating to the permissible sound level, consider certificates of conformity for new vehicles to be no longer valid for the purposes of F8Article 48 of Regulation (EU) 2018/858, and shall prohibit the registration, sale and entry into service of such vehicles where such vehicles do not comply with this Regulation.