Extinction Rebellion activists, including some from Mid Wales, dressed as canaries have been blockading the entrance to 20 Fenchurch Street in the City of London.
Known as the 'Walkie Talkie' building it is home to insurance companies that the protesters say continue to insure fossil fuel projects around the world.
"Our dead canaries show that the time of danger is now," said Laurence Tidy, an Extinction Rebellion activist from Machynlleth. "Insurance and financial institutions need to divest from polluting fossil fuels immediately.
"They also, hypocritically, make premiums out of insuring communities who are facing the critical impacts of climate chaos, only to then invest that in dirty fossil fuel projects. It's time we call them out on their irresponsible behaviour."
Rebels have been dressed as canaries in reference to the use of the birds in coal mines as an advanced warning of some danger.
The metaphor originates from the times when miners used to carry caged canaries while at work; if there was any methane or carbon monoxide in the mine, the canary would die before the levels of the gas reached those hazardous to humans.
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