Nitrous oxide: Possession of laughing gas to be criminal offence bbc.co.ukMichael Gove defends UK government plan to ban laughing gas The GuardianNitrous oxide to be banned under plans to clamp down on anti-social behaviour Sky NewsLaughing gas ban ‘will not stop young people using it’, say experts The IndependentLaughing gas to be banned in crackdown on anti-social behaviour Evening Standard