I'm a Director in Arup’s energy consulting team based in London. Focused on cities and sustainability, I lead Arup’s partnership with the C40 group of cities committed to tackling climate change.

Prior to joining Arup as a Director in 2008, I was the climate change and sustainable transport adviser to the Mayor of London, in which role the London Evening Standard described me as “the intellectual force behind Ken Livingstone’s drive to make London a leading light of the battle against global warming.”

I led the development of London's ground-breaking Climate Change Action Plan and the associated programme of projects to reduce London’s carbon emissions by 60% by 2025.

I left Arup in April 2013.