Possession of the class C drug for unlawful use can lead to a prison sentence of up to two years

Archived version: https://archive.is/newest/https://www.independent.co.uk/news/uk/crime/laughing-gas-breathalyser-nitrous-oxide-police-b2975925.html

Disclaimer: The article linked is from a single source with a single perspective. Make sure to cross-check information against multiple sources to get a comprehensive view on the situation.