CLIMATE protesters synchronised their watches as a “wake-up call” to world leaders about global warming.

Campaigners gathered outside St Michael at the Northgate, in Cornmarket Street, Oxford, just after noon today for a “flash mob” and called for more action to tackle climate change.

They joined thousands of groups in more than 130 countries around the globe in sounding their alarms for the protest at the same time.

Mary Gill, of the Oxford branch of climate campaign group Avaaz, said: “The idea of a global climate wake-up call got going just a few weeks ago, and snowballed into a massive mobilisation of millions around the world who want leaders to do more to stop runaway climate change.

“Oxford residents took part to help show the huge level of public concern and to call on climate talks to move far and fast enough to deliver a deal that will avert climate catastrophe and unleash a new green economy.”

Film and photographs from the day’s event will be now be put together and sent to world leaders.

They will also be shown at the US premiere of climate film Age of Stupid, which is being shown in more than 400 theatres simultaneously. Audiences will be urged to petition their government.