RoHS Directive refers in legal practice to the European Union regime restricting the use of certain hazardous substances in electrical and electronic equipment, and to its retained or implementing legislation in the UK and Ireland. It primarily concerns compliance, product safety, environmental regulation, CE and UKCA marking, and supply chain due diligence.The core EU instrument is Directive 2011/65/EU (RoHS 2), as amended, which limits specified substances (including lead, mercury, cadmium and certain phthalates) and requires conformity assessment, technical documentation and declarations of conformity. In England & Wales, Scotland and Northern Ireland, RoHS requirements are implemented through the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (as amended), now part of retained EU law post‑Brexit. In Ireland, RoHS is implemented under national regulations made pursuant to EU law, continuing to track EU amendments.The term is widely used in contracts, regulatory advice, M&A due diligence, product liability and enforcement discussions to describe obligations on manufacturers, importers, distributors and authorised representatives, and associated risks such as regulatory investigations, product recalls, market withdrawal and criminal or administrative sanctions.