Anti-Brexit protesters gather in Parliament Sq ahead of rally Hundreds of people gather in Parliament Square in London in anticipation of the arrival of hundreds of thousands of pro-Europeans from across Britain marching through London calling for another referendum on EU membership. The protesters are expected to arrive after making their way from Hyde Park to the Houses of Parliament in Westminster, London. The protest -- set to be one of the largest in the capital in decades -- comes after EU leaders this week granted a delay to Brexit, prompting Prime Minister Theresa May to make a renewed bid to win MPs' backing for her divorce deal. IMAGES of people gathering in Parliament Square ahead of the arrival of the protesters making their way from Hyde Park