We need to ensure that diesel-only and petrol-only vehicles are phased out gradually by 2030, and before that if possible, but certainly the technology must allow us to do that. There are options. There is a place in mid Wales producing hydrogen vehicles. I went on a visit there—Riversimple. So, there are options out there. What we must do is ensure that people can take advantage of those opportunities.

We need to see clean air zones in towns and cities. We heard about Cardiff and Port Talbot, which have higher levels of particulate matter than Birmingham and Manchester, and some of the most polluted streets in Britain outside London are in Wales.

We need to give communities rights to place pollution-monitoring equipment outside schools and hospitals. We need to enable local authorities to introduce pollution and congestion charges. We need, yes, national plans, but also regional plans to reduce air pollution in Wales. And I do feel strongly that we need to reform planning law to make it a requirement to put more emphasis on the impact of air pollution within that planning system.

There is a lot more that can be done. The major frustration for me is that much of this hasn't already been done. There’s been too much dragging of feet. And, as I said earlier, every week that we wait will lead to around 40 unnecessary deaths. So, the time for talking must be over, and I'm looking to Government here and saying, 'It's time for action.'