London, UK. February 23rd 2019. Pro Brexit ÔYellow VestsÕ marched escorted by police from Trafalgar Square down Whitehall and Parliament Street to Parliament Square. Traffic was held longest outside Downing Street and at the Parliament Square junction. Angry drivers sounded their horns. The ÔYellow VestsÕ then marched back again. They carried placards stating Leave Means Leave, supporting leaving the EU without a deal. Credit: Stephen Bell/Alamy Live News.