CNN noted, "Extinction Rebellion, which launched late a year ago with climate protests that shut down five London bridges, made headlines earlier this month when members of the group disrupted a Brexit debate in Parliament with a nude demonstration".
Extinction Rebellion (XR), an environmentalist group responsible for causing scenes in the House of Commons earlier this month when semi-naked activists stripped off in Parliament as MPs tried to debate Brexit, claim they intend to occupy the roads for at least 72 hours.
Some members of the group glued themselves to doors at the headquarters of Shell on Embankment.
Environmental protesters have blocked Waterloo Bridge in London as they try to bring the city to a standstill.
They want the government to call a climate state of emergency and they're taking direct action.
Police have arrested more than 100 environmental protesters overnight as the climate demonstrations that brought chaos to central London enters its second day.
Savannah revealed that the group had arranged 50 trees to be delivered to Waterloo Bridge and that they would cover the bridge with greenery.
These are central London landmarks protesters are targeting as part of efforts to demand the Government declares a climate emergency. "In the majority world, indigenous communities are now on the brink of extinction".
"We respect the right of everyone to express their point of view, we only ask that they do so with their safety and the safety of others in mind", a Shell spokeswoman said by email. "We must act now".
Organisers expect thousands of people to converge on Marble Arch, Oxford Circus, Waterloo Bridge, Piccadilly Circus and Parliament Square in non-violent action which could last for weeks.
Police have advised Londoners to leave extra time for their journeys because of possible delays caused by the protest.
Organisers hope the protests will last for several days and say its success depends on the number of people willing to occupy the sites in the days and nights ahead. "We're just going to get bigger and more annoying until the government speaks to us".