There has been a lot of focus on carbon reduction, but less on the growth and jobs opportunities from doubling the size of the green economy by the Mayor’s stated target of 2030. London has a strong track record on decarbonisation as a C40 city – with CO2 emissions down 40% in 2017 vs. 2000 – but has a long way to go to achieve net zero (or intermediary targets). At the same time the capital has many distinctive competitive advantages that could lend it to being a first mover both in the UK, and globally.