London police estimate there were over 300,000 gathered at a pro-Palestinian rally in London calling for a Gaza ceasefire.
This weekend's rally marked the region's biggest protest since the Israel-Hamas conflict began.
At least 145 people have been arrested, many of them counter-protestors who belonged to far-right groups.
UK correspondent Gavin Grey says people have been charged with possession of weapons, public disorder, possession of drugs and assault.
LISTEN ABOVE
See omnystudio.com/listener for privacy information.