A series of four phone-ins (calls charged at national rates) during the European election campaign broadcast simultaneously on Radio 4 and BBC2. You are invited to put your views on the European Union, and Britain's role in it, to the key party leaders. Today, call Alex Salmond , leader of the Scottish National Party, and Dafydd Wigley , President of Plaid Cymru. Presented by Diana Madill. Editor Brian Walker