大象传媒

Possession of nitrous oxide, also known as NOS, has become a criminal offence in the UK. Now categorised as a class C drug, possession of laughing gas for its "psychoactive effects" will carry a sentence of up to two years in prison.

The government says the ban will combat anti-social behaviour and reduce damage to users' health.

But experts have warned against a ban, saying it's disproportionate to the level of harm it causes. So what impact will a ban have, especially in London?

大象传媒 Radio London's Eddie Nestor has been speaking to Alastair Noyce, a Professor of Neurology from Queen Mary University.

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