CLIMATE activists dropped a large banner reading “April 21: Unite To Survive” from London’s Westminster Bridge this morning at the start of a 100-day campaign.

Extinction Rebellion (XR) protesters marched from Jubilee Gardens and formed a chain on the pavement across the bridge to mark the countdown to April 21, when some 100,000 people are expected to gather outside Parliament to demand urgent action on climate change.

Dr Stephanie Williamson of Scientists for XR said that it was important to “build bridges and come together across differences to unite for our very survival.”