Footage from yesterday's climate change march in London, UK, where thousands took to the streets ahead of this week' UN Climate Summit in Paris. <br /><br />Demonstrations took place in cities around the world as the conference, known as COP21, was set to get underway. <br /><br />From today, world leaders will be trying to pen a long-term deal that will see carbon emissions curbed across the globe. <br /><br />Nearly 150 senior government figures and heads-of-state are attending the summit, which is far more than in 2009 when the UN last tried to force through a deal on climate change in Copenhagen. <br /><br />The global business community are also heavily represented at the summit, far more so than ever before.
