There's a recording on youtube here of this very interesting session, with 3 excellent speakers:
https://www.youtube.com/watch?v=uPcfZ4xV6FI&feature=youtu.be
They also held another very interesting session with more speakers last October - see their website for more details, and recordings of the individual speakers:
Replies
Here are details of the event:
Haringey Clean Air free Webinar