MI5 Says Russia's Brexit Interference Bid Failed to Sway Result

Russia tried but failed to sway Britain's 2016 Brexit vote, MI5 chief Ken McCallum said Oct. 13, 2026. Moscow used slanted coverage on state outlets RT and Sputnik and fake accounts, mostly on X, he said. The effort was crude and did not change the result. He backed Prime Minister Andy Burnham's account, warning debate hands Russia a propaganda win.