There can be few backbench politicians who have had as much influence on British politics as Tam Dalyell. Fiercely independent and a thorn in the side of several Prime Ministers, his contributions to politics include his vocal opposition to military intervention in the Falklands and Iraq, as well as his 'West Lothian question' about partial Scottish and Welsh devolution. Here Dalyell discusses his extraordinary life with BBC broadcaster James Naughtie in an event recorded live at Edinburgh International Book Festival.