As Reporter Lewis Denison explains, the leaders of the SNP, Plaid Cymru and Sinn Féin have predicted the breakup of the UK. The first ministers of the UK’s three devolved nations – SNP leader John Swinney, Plaid Cymru leader Rhun ap Iorwerth and Sinn Féin vice president Michelle O’Neill – met in Cardiff on Monday morning to declare jointly that “Westminster’s time is coming to an end”. Along with Sinn Féin president Mary Lou McDonald, who is the leader of the opposition in the Irish Dáil, the gr