Extinction Rebellion will launch daily protests in London later this month involving “mass participation on the streets”.
The protest group said that demonstrations would be held from April 9 - their first major activity in the capital this year.
In an online briefing, spokesman Andrew Smith said: “From Saturday April 9 we will meet at 10am in Hyde Park every day.
“We will be easy to find, we will be easy to join, we will be more disruptive than ever, and we will be impossible to ignore.”
He went on: “We’re expecting huge numbers from the 9th.
“In London we won’t have pink boats, we won’t have pink tables, we will just have people power.
“In the tradition of non-violent civil disobedience, we will disrupt business as usual until the Government and big business make change. We need everyone to join us.”
Mr Smith said the group wanted April’s demonstrations to “feel and look very different from previous rebellions”. XR’s previous demonstrations have included blocking public transport systems in the capital, provoking frustration among commuters.
Last September, the Met Police made 508 arrests following two weeks of protests in London.
Protesters glued themselves to a McDonald’s restaurant, a pink table in Oxford Circus and multiple roads as part of two weeks of demonstrations.
It comes after protesters from the group joined activists from Just Stop Oil group on Friday to block major oil facilities.
A number of major oil terminals were forced to suspend operations on Friday morning as demonstrators blocked access roads - preventing tankers from leaving the facilities.
Extinction Rebellion said the government was “making a choice to continue its addiction to fossil fuels as war wages in Ukraine, instead of accelerating the transition to a renewable led future”.
