Labour leader Jeremy Corbyn was joined by Green Party's Caroline Lucas, Lib Dem's Vince Cable, SNP's Ian Blackford and Plaid Cymru's Liz Saville-Roberts to meet with Thunberg and United Kingdom school strike representatives.
Her actions inspired a global movement of student action on climate change, including an estimated 1.4m school children refusing to attend school in March.
MICHAEL GOVE admitted too little has been done by the government to tackle global warming, as he told teenage activist Greta Thunberg yesterday her views "have been heard".
Organisers of the meeting pointedly left a place at the table for the Prime Minister, who was chairing Cabinet in 10 Downing Street at the time.
At Westminster, where she met Speaker John Bercow and Green Party leader Caroline Lucas, she took a swipe at climate change sceptic Donald Trump.
"Its freakish we have to do this in order for governments to listen to the scientists", said Diana Warner, 60, who glued her hand to the train.
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Mr Corbyn told Miss Thunberg: "Well done for what you have done". Here, edie rounds up what key politicians had to say about the rise in climate activism.
The force has warned demonstrators they must leave a designated area by 11.59pm or be liable to arrest.
An Extinction Rebellion climate change protester with his hand glued to the floor outside the London Stock Exchange talks to a police officer in the City of London, Thursday, April 25, 2019.
It's eight days since the Extinction Rebellion protest catapulted climate change into the limelight, finally giving it the attention it deserves, in the eyes of many.
Protesters were removed from Oxford Circus and Waterloo Bridge earlier this week.
Protester Steve Jones, 53, suggested some of the disruption may be relaxed if the group was granted "meaningful discussions" with the Government.
Police have arrested more than a thousand activists since they began their protests last week, and on Tuesday announced 71 people will face charges over their actions.