Extinction Rebellion protests have resumed for a second day in London after police were forced to make dozens of arrests.
Climate change protesters have returned to Parliament Square in Westminster, while a demonstration is also planned outside Buckingham Palace.
At least 160 people were arrested on Tuesday after thousands of campaigners descended on Parliament Square, blocking roads and bringing traffic to a standstill, Scotland Yard said.
The Metropolitan Police said offences included assaulting an officer, obstructing police and public order breaches.
At least 10 people were carried away by police after the group refused to move from the roads around Parliament Square.
Protesters chanted and cheered as the officers took them away to nearby police vans.
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 said the gatherings could only take place off the main roads at Parliament Square between 8am and 7pm.
The force said the same conditions would be imposed on the demonstrations planned for Wednesday.
Various stunts are due to take place throughout the day, including a “theatrical” display highlighting “how the climate crisis is causing death”, and a silent protest outside Buckingham Palace, Extinction Rebellion said.
Further events are planned to take place up until September 10 across the city, including a “carnival of corruption” outside the Treasury, and the “walk of shame” near the Bank of England.
Last year, more than 1,700 arrests were made during Extinction Rebellion’s 10-day “Autumn Uprising”, which saw major disruption across the UK
This story is being updated.
