The manufacture, use and importation of chemical substances, including manufactured nanoparticles, is covered by the EU Regulation 1907/2006 on industrial chemicals, the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) Regulation. UK officials have actively contributed to a European Commission review of REACH. The review is expected to report later this year on, among other things, the way in which the regulation addresses manufactured nanomaterials. We will carefully consider the findings once published. Elsewhere, there are currently no plans to specifically regulate nanoparticles below PM 2.5.