Even by its own more lax standards, the UK is not meeting its statutory obligations to limit harmful nitrogen dioxide (NO2) emissions in many local areas, though targets for other pollutants were met between 2010 and 2019.
Market failure certainly delays aggressive climate action, but even had the whole world in the 20th century been socialist, the planet would still be heating up.
Treating the climate crisis as a health crisis could help engage those otherwise disinterested in environmental destruction, or the loss and damage experienced on the climate front line.