20:57

Finally, the leaders are asked about climate change.

Sturgeon says the Scottish government has already passed a bill with the most challenging climate targets in the world. “We changed our mind on reducing air passenger duty, but the government also needs to work with companies as well as encouraging individuals to make changes.”

Leonard sets out Labour’s green industrial revolution – asked what unpopular decision he’s prepared to make on climate change, he says he wants a revolution by consent.

Carlaw says it’s not a case of foisting things upon people – there’s an international aspect in helping other countries to avoid the mistakes the UK has made. We need to manage resources better.