Not sure why Culdrose would be evicted, but there you go.
For a few years now there has been a pollution monitor on Wesley Street in Camborne, which features high density terraced housing originally built for the mining community along both sides apart from where Tesco and Centenary Methodist Church stand. The road is narrow and with the houses either side it is akin to driving through the Death Star trench -without the TIE Fighters. When the first results became available they were shockingly high, as bad as if not worse than pollution in big cities, and they have remained high ever since. The road is nearly always busy, and the pollution has nowhere to go except into the houses which crowd the road. This is the sort of thing that causes the problem, and the areas highlighted have very similar layouts. There is already a bypass around Camborne, by the way.
Of course, if Cornwall Council planners did not keep approving housing schemes in which the housing pushes right up to the road -as it now does on the other side of the Wesley Street Tesco as well- that would help. In any case, there seems to be a growing realisation that pollution is becoming a big problem, and until central government takes an interest local authorities will have to struggle on as best as they can -as usual. If nothing else it certainly helps to highlight the issue.