Teenage climate change activist Greta Thunberg has told Extinction Rebellion protesters in London that "for way too long politicians have got away with not doing anything at all to fight the climate crisis."

Addressing thousands of people from the stage at a protest site in Marble Arch last night (April 21), the Swedish teenager warned: "We will make sure they will not get away with it any longer."

"We will never stop fighting for this planet and for ourselves, our future and the future of our children and grandchildren," she added, to applause.

A total of 963 people had been arrested as of Sunday evening while 40 have been charged in connection with the weeklong-running protests, local media reported, citing the Met Police.

Greta Thunberg, 16 year old climate change campaigner from Sweden, is addressing massive crowds at the Extinction Rebellion Marble Arch upon her arrival in London on Easter Sunday, 21 April. 'Together we are making a difference,' - says Greta. 'We are now facing existential crisis - the climate crisis and ecological crisis, which have never been treated as crisis before. They have been ignored for decades... We will never stop fighting for this planet and for ourselves, our future and the future of our children and grandchildren.' There is a massive roar of applause as Greta Thunberg finishes her first speech in London. #GretaThunberg #London #speech #ExtinctionRebellion #XR #MarbleArch #ClimateEmergency #EcologicalEmergency #ClimateChange