The government agrees with the Committee on the potential benefits of a group-based approach to PFAS regulation in addressing risks more effectively and efficiently and already draws on extensive independent scientific and regulatory expertise in this area. As set out in our response to recommendation 3 and 4, we await to see the final EU REACH universal PFAS restriction, including how it applies a group-based approach. The HSE’s Regulatory Management Options Analysis (RMOA) on PFAS set out a clear rationale for a grouping approach based on OECD’s foundational work. The RMOA was recognised by Defra’s independent Hazardous Substances Advisory Committee (HSAC) as “comprehensive and well researched”, with a methodology that is “thorough and logical” and provides a reasoned basis for grouping PFAS. Together, this evidence will help ensure any future UK approach is effective, proportionate and grounded in the best available science.