Yes, I can provide that assurance. I will expand on this later, but those who are using nitrous oxide for legitimate purposes, which includes the catering industry, the dental sector, research and even semiconductor manufacture, will be outside the scope of these restrictions.
The hon. Gentleman touched on the control of harmful drugs more generally. It is important to control harmful drugs, particularly where they are very addictive and cause health harms. We have seen in cities in North America that have liberalised their drug laws substantially, such as San Francisco, Portland and some Canadian cities, that it has resulted in widescale public health problems.