The UK national authority has published adopted statutory guidance on the Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016 (SI 2016/1107), as amended by the Product Safety and Metrology (EU Exit) Regulations 2019. It covers conformity assessment, marking and placing-on-market duties for ATEX-scope electrical and mechanical equipment supplied in Great Britain, affecting manufacturers, importers and distributors of hazardous area equipment. The guidance states no transition deadline.