Question to the Home Office:

To ask the Secretary of State for the Home Department, if she will make it her policy to introduce traceable labels on nitrous oxide canisters to allow the authorities to know the point of sale.

With apologies for the previous answer, nitrous oxide is controlled as a Class C drug under the Misuse of Drugs Act 1971, and it is an offence to produce, supply, offer to supply, possess, possess with intent to supply, import and export nitrous oxide, where the intention is for it to be used for its psychoactive effects.

The Home Office is not responsible for labelling or tracking nitrous oxide in the many contexts in which its use is legitimate. This would fall to government departments and regulators for the relevant sectors.