Book of the Week - The Defence of the Realm - Episode 4

Peter Firth reads from Christopher Andrew's history of the British Security Service, MI5. Using material released by the organisation's archives to mark its centenary year, this charts MI5's successes and failures through the two World Wars, the Cold War and the complex modern world of counter-terrorism. The most publicly turbulent disagreements between the spies and the politicians to whom they reported occurred during Harold Wilson's final term in office. A Waters Company production for BBC Radio 4.