Margaret Thatcher was the first political leader in any major country to warn of the dangers of climate change

The new generation of Labour is different. Different attitudes, different ideas, different ways of doing politics.

Think of how we challenged the impression that we taxed for its own sake and that we were hostile to business. We were right to change.

The transition to a low-carbon economy will be one of the defining issues of the 21st century. This plan sets out a route-map for the UK's transition from here to 2020...every business, every community will need to be involved. Together we can create a more secure, more prosperous low carbon Britain and a world which is sustainable for future generations.

Let the message go out - a new generation has taken charge of Labour which is optimistic about our country, optimistic about our world, optimistic about the power of politics. We are optimistic and together we will change Britain.

Congratulations to Barack Obama - great victory based on building fairer economy and optimism about what politics can achieve.

I suppose not everyone has a dad who wrote a book saying he didn't believe in the Parliamentary road to socialism.