I thank the Minister for that reply, but why is the department not prepared to show more leadership on this issue? After all, we know the scale of the problem. In the UK, we are using 35 million plastic bottles a day, 16 million of which end up being dumped on our streets, in our rivers, in the sea and in landfill. We know the scale of the problem, and we also know that there are solutions. Other European countries have already introduced bottle deposit schemes with great success. We know that, when we introduced the 5p plastic bag levy, it cut the number of single-use plastic bags considerably. Such measures can work. Is this not just a question of leadership? Why does the department not take a stronger line on this issue?