PICTURES show activists marching through central London as part of Extinction Rebellions 10 days of protests to highlight the UK climate emergency.

Thousands of campaigners took to Parliament Square where they blocked roads, bringing traffic to a standstill, chanted and made a range of speeches today ( September 1).

The Metropolitan Police said 90 people had been arrested as of 6pm for offences including assaulting an emergency worker, obstructing police and public order breaches.

At least 10 people were carried away by officers after the group refused to move from the roads around Parliament Square.

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Video footage posted online also appeared to show demonstrator John Lynes, 92, being led away from Parliament Square by police.

Mr Lynes, who has taken part in previous demonstrations, was filmed walking with a stick, flanked by officers.

Four marches converged in Westminster after the Met had said the gatherings could only take place off the main roads at Parliament Square between 8am and 7pm.

The force said on Tuesday night that the same conditions would be imposed on further demonstrations planned for Wednesday.

Campaigners enjoyed a carnival-like atmosphere, waving flags and banners as they demanded the Government take the "climate crisis" seriously.

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One protester, Karen Wildin, 56 - a tutor from Leicester, told the PA news agency: "I'm here today because I have serious concerns about the future of the planet - we need to put this above anything else.

"Never mind Covid, never mind A-levels, this is the biggest crisis facing us and we need to raise the message as loudly as possible.

"Not a lot has been done on this issue, everyone needs to hear the message."

Sarah Lunnon, a prominent member of Extinction Rebellion, said: "The failure to act on this issue will have a catastrophic impact on the future of us and the generations to come.

"We want to occupy Parliament Square to make our voices heard. Of course we're in the middle of a pandemic but we're balancing the risk, this is the biggest issue facing us."