Calls for UK Government Chief Whip to Resign Over Allegations of ‘Cheating’ on Key Brexit Vote

Conservative Party Chief Whip Julian Smith arrives for a Cabinet meeting at 10 Downing Street, on July 10, 2018, in London. Jack Taylor/Getty Images

LONDON—Brexit has already strained Britain’s patchwork constitution and archaic conventions at the seams, variously pitting the roles of Parliament, the Supreme Court, the House of Lords, and the government against one other.

Now, an old parliamentary convention known as “vote pairing” has been dragged into the fray, with the government chief whip accused of “cheating” on a key piece of Brexit legislation.