Nitrous oxide, otherwise known as ‘laughing gas’, has deflated in popularity among Brits in recent years, but sightings of silver canisters and people inhaling balloons are not uncommon in the capital.
According to the Office of National Statistics (ONS), use of nitrous oxide decreased in the 12 months prior to March 2024, with a slight drop in 16 to 24-year-olds’ usage.