CARDIFF, WALES - MARCH 17: British Prime Minister Theresa May looks on following her speech at the Conservative Spring Forum on March 17, 2017 in Cardiff, Wales. In her speech the Prime Minister Theresa May is due to set out her desire to create a more united Britain which follows demands by leader of the SNP, Nicola Sturgeon, for a second independence referendum for Scotland. (Photo by Matthew Horwood/Getty Images)
