Of the 28,000 attendees, it is estimated that more than 10,000 attended London’s march on August 25.
The organizers at Surge Activism took to Instagram to celebrate the unprecedented turnout.
The post reads: “Thank you so much to all of the incredible organisers and attendees who made this happen!
“How much bigger do you think we can we go next year??”
The first Official Animal Rights March took place in 2016 and drew an estimated 2,500 activists.
This year’s London event included a march through city center followed with speeches by accomplished advocates and activists.