When we talk about climate change, it can seem like an incredibly powerful threat that we are all completely powerless to deal with, but that is simply not true. We have already cut our emissions by 30-odd per cent. since 1990. In fact, the last time emissions were as low as this in the UK, Queen Victoria was on the throne. We can do it and we can lead the world in doing it, but there is no complacency. We are not doing this to give ourselves a birthday cake and a pat on the back. We are doing this because we think there is much more opportunity, and we can push the world to go further by showing that it is possible.