Saturday marks the two-year anniversary of the UK voting to leave the European Union, and thousands of demonstrators are gathering in London to call for a second referendum. The anti-Brexit campaigners are demanding for another vote on any divorce deal agreed on between Britain and the EU. British Prime Minister Theresa May said that she is confident the UK will get a good deal in the negotiations. She is also reportedly to come up with a white paper on Brexit before the EU summit starting on Thursday. Our Richard Bestic has more from London.