The man, who is barefoot and holds a Palestine flag, has been spoken to by negotiators several times but at 10.30pm had not yet agreed to come down.
A 29-year-old man has been charged after climbing onto the clock tower of Big Ben, Metropolitan Police said. Daniel Day, of Palmerston Road, Westcliff-on-Sea, Essex, has been charged with intentionally or recklessly causing a public nuisance and trespassing on a protected site.
A barefoot man who scaled Big Ben's tower with a Palestine flag has been on the building for more than seven hours.
A man who scaled the clock tower of Big Ben on Saturday morning came down just after midnight on Sunday, having spent hours barefoot and holding a Palestine flag on the Elizabeth Tower. Pictures from the scene showed the man being lifted to the ground in a cherry picker. Westminster Police said the man was arrested after reaching the ground.
Activists targeted a Trump-owned golf course in Scotland early on Saturday morning, painting "Gaza Is Not For Sale" on the lawn