The following Environment guidance note provides comprehensive and up to date legal information covering:

  • Chemicals
  • Brexit impact
  • CLP Regulation

Brexit impact

As of exit day (31 January 2020) the UK is no longer an EU Member State. However, in accordance with the Withdrawal Agreement, the UK has entered an implementation period, during which it continues to be subject to EU law. This has an impact on this content. For further guidance, see: Brexit—impact on environmental law and Brexit Bulletin—key updates, research tips and resources.


Control of Substances Hazardous to Health Regulations 2002 (COSHH) requires employers to control substances that are hazardous to health.

Employers must prevent or reduce workers' exposure to hazardous substances by:

  1. finding out what the health hazards are

  2. deciding how to prevent harm to health (risk assessment)

  3. providing control measures to reduce harm to health

  4. making sure they are used

  5. keeping all control measures in good working order

  6. providing information, instruction and training for employees and others

  7. providing monitoring and health surveillance in appropriate cases

  8. planning for emergencies

COSHH defines 'substance hazardous to health' to include:

  1. substances designated as very toxic, toxic, corrosive, harmful or irritant under product labelling legislation (the CHIP Regulations)—these substances should be clearly identified by hazard symbols. The orange and black symbols required under the CHIP Regulations are being replaced under the classification, labelling and packaging of substances and mixtures regulation (CLP) regulation

  2. substances for which the Health and Safety Commission