British Cycling say: It is now quite clear that we are in the midst of an air quality crisis. While it poses a serious risk to all of us, it is having a particularly detrimental impact on our children, and it is encouraging to see that politicians of all persuasions are now at least beginning to think about how we can start to reverse the trend.

We believe that enabling more people to cycle has a crucial role to play in improving the quality of our air over the coming years.

The following short report gives some reasons why: Clean Air Day report.