More than 4.18 million people have signed an online petition urging the U.K. government to cancel Brexit, the most names collected in a public campaign. The record was reached just before midday Saturday, days after Parliament’s petitions website repeatedly crashed as the signatures piled up — fueled by endorsements from singer Annie Lennox, actor Hugh Grant, science broadcaster Brian Cox and comedian David Mitchell. “The rate of signing is the highest the site has ever had to deal with,” the House of Commons petitions committee said on Twitter as the petition went online.