You claim an overall improvement in air quality after Silvertown, even though air gets worse in many places. Have you looked at the interaction of this new pollution distribution with population distribution, to understand whether Silvertown will lead to better or worse health outcomes?
The air quality assessment for Silvertown Tunnel specifically looks at how concentrations in air quality change at receptors, such as homes and schools, and therefore does consider the interaction of population and air quality effects. In addition to this, Transport for London have undertaken a Health and Equalities Impact Assessment, which assesses the impact of changes in air quality on health.
As stated in my response to Mayor’s Question 2020/1067, it is important to note the further steps of monitoring and mitigation that are now planned. The existing assessments were undertaken prior to April 2016, and do not take into account a number of measures that are now committed, which will further improve air quality for those worst affected.