While it's a popular ingredient in many culinary applications, nitrous oxide can also be misused. If you observe nitrous oxide (N2O) being misused in the United Kingdom, it is important to report the misuse to the appropriate authorities. N2O is regulated as a psychoactive substance under the Psychoactive Substances Act 2016 in the UK, and it is illegal to produce, supply, or import N2O for human consumption.

To report N2O misuse in the UK, you can contact the police or a local authority, such as a council or a public health agency. You can also report N2O misuse to the Medicines and Healthcare products Regulatory Agency (MHRA), which is responsible for regulating medicines and medical devices in the UK.

FSA/EHO: If you suspect that nitrous oxide is being misused in a food establishment, it is important to contact the Food Standards Agency (FSA) or Environmental Health Officer (EHO) in your area. They are responsible for enforcing food safety regulations and will be able to investigate and take action if necessary.

If you are uncertain about where to report N2O misuse in the UK, you can contact a local regulatory agency or a legal professional for guidance. It is important to report N2O misuse to the appropriate authorities to help ensure the safety of the community and to prevent injury or other consequences.
Police: You can contact your local police station or the non-emergency police phone number (101) to report N2O misuse.

Local authority: You can contact your local council or public health agency to report N2O misuse. You can find contact details for your local council on the government's website.

Medicines and Healthcare products Regulatory Agency (MHRA): You can contact the MHRA by phone (0300 124 0203) or by email (info@mhra.gov.uk) to report N2O misuse.