UK NewsProtesters Block UK’s Busiest Motorway for Third Time in a WeekSavePrintHighways England workers on the exit slip road of the M25 motorway near Leatherhead after protestors blocked the road and left paint on it, on Sept. 17, 2021. PAAlexander Zhang9/17/2021|Updated: 9/17/2021Protesters demanding government action on home insulation have blocked Britain’s busiest motorway for a third time this week.At least three junctions on the M25 were targeted on Friday morning. Surrey Police said officers had arrested 14 people at junction nine.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.