No, there will be no gap, and it is not unintentional or inadvertent; it is just likely that we will have to amend the way schedule 5 to the 1971 Act works in order to create this new category, essentially to accommodate nitrous oxide. The two SIs will be implemented on the same day—there will be no lacuna or gap. That is just how we have to sequence the secondary legislation under the Act.
Let me return to the question of prevalence. Some 230,000 young people inhaled this harmful substance in the year ending June 2022. It was the third most misused substance among that age group and, as we have discussed already, there is evidence that it has harmful neurological effects, particularly when consumed in quite large quantities.
Beyond that, we know that nitrous oxide has a significant effect on antisocial behaviour—indeed, we announced the measure for which we are legislating today in the antisocial behaviour action plan. Again, I thank parliamentary colleagues for raising the impact that nitrous oxide has had on their communities. It is fuelling antisocial behaviour and having an impact on the decent, hard-working majority who want to use their local park or go down their local high street without being harassed by antisocial behaviour or seeing the little silver canisters littered all over the place. To give an illustration of the scale of the problem, after the Notting Hill carnival a couple of weeks ago, it is estimated that 13 tonnes of those nitrous oxide canisters and others were collected from the street by the clean-up crews. That is an extraordinary amount.