I am grateful to the hon. Gentleman for his support. As he will know, the frontline staff are the people who are upholding the law not just on this issue but on all age-related sales. While today we can only discuss amendments on corrosive products and on knives, the Minister needs to look at this issue in relation to all age-related sales. Shop staff are upholding the law on our behalf, and they deserve protection. My new clause would strengthen that protection. It provides for a level 4 fine of up to £2,500 for abusive behaviour when staff are enforcing the legislation that the Minister proposes.