In Britain, protesters seeking a referendum on the final Brexit deal attended a rally which organisers say was the biggest demonstration of its kind. Young voters led the People's Vote march to London's Parliament Square, which supporters say attracted nearly seven lakh protesters. <br />''<br />''It also had support from a number of MPs who want a fresh vote. This is something which has already been ruled out by Prime Minister Theresa May.The Metropolitan Police said it was not able to estimate the size of the crowd.<br />'' <br />''<span style="color: #222222;">Mayor of London Sadiq Khan, who started the march, was among those who addressed Parliament Square, along with representatives from the main political parties. Celebrity speakers included Steve Coogan, Delia Smith and Deborah Meaden.</span><br />