The Defence of the Realm

To mark the centenary of its foundation, the British Security Service, MI5, has opened its archives to an independent historian. This book reveals the precise role of the Service in twentieth-century British history, since its foundation by Captain Kell of the British Army in October 1909 to root out 'the spies of the Kaiser'. To mark the centenary of its foundation, the British Security Service, MI5, has opened its archives to an independent historian. This book reveals the precise role of the Service in twentieth-century British history, since its foundation by Captain Kell of the British Army in October 1909 to root out 'the spies of the Kaiser'.