Average roadside nitrogen dioxide concentrations remain below levels observed in the previous three years, despite some increases as the March lockdown measures were eased. Working closely with Ministers in the Department for Transport, we continue to drive forward our ambitious plans to improve air quality, and we are delivering our clean air strategy and working in partnership with local authorities to deliver measures to tackle nitrogen dioxide pollution. The Environment Bill will enable greater local action to tackle air pollution.

The hon. Lady gives some examples, but she is somewhat aggressive in her approach, in that I work so closely with the Department for Transport and the Department of Health and Social Care so that we do have a joined-up approach on air quality, and our clean air strategy goes right across all Departments. Some £1.2 billion from the Department for Transport is being devoted to cycling and walking investment, and the bike vouchers literally went like hot cakes in the summer. We do work closely together. The hon. Lady raises some important points, and we are looking into all the options because we know that times are changing and work patterns are changing.

I thank the hon. Lady for bringing Wales into the discussion, but of course air quality is a devolved matter—she serves on the Environment Bill Committee, in which we have said so many times that it is a devolved matter. I hope that she and the Welsh Ministers have read our clean air strategy, because it is considered a global leader, but I am always open to ideas. If we can pick up tips from other places, I am all for it.