The Member is quite right to raise the public health concerns on this. Like he said, it's very clear that it's always been perceived to be an environmental issue, but, actually, if we're going to get to the root cause and tackle it and improve our air quality, it does have to involve cross-Government and cross-government working as well, in terms of local government and the UK Government.

In terms of looking at areas or zones where perhaps you could ban or limit access for high-emission vehicles, that's something that could be considered under clean air zones. But what we made clear in the debate too is that the clean air zones are not a one-size-fits-all approach. There will be different problems, and therefore different ways that we can best tackle it in different areas across Wales.