Peter Raina read Modern History at St Catherine's College, Oxford. Later he worked on various aspects of British history in Oxford, as Senior Research Associate, the Graduate Centre, Balliol College; Honorary Member of High Table and Member of the Senior Common Room, Christ Church; Associate Member of Nuffield College; Honorary Member of the Senior Common Room, Magdalen College; Visiting Research Scholar, Faculty of History; Visiting Fellow at the Institute of Historical Research, School of Advanced Studies, London, and at the Centre of International Studies, Faculty of History, Cambridge. He was granted High Table Dining Privileges at Peterhouse and at Corpus Christi College, Cambridge. He is a life Member of Clare Hall, Cambridge. His publications include a monumental six volume history of the House of Lords reforms, and classic biographies: The Seventh Earl Beauchamp: A Victim of His Times, and John Sparrow, Warden of All Souls College, Oxford.
- George 'Dadie' Rylands: Shakespearean Scholar and Cambridge Legend
- A Daring Venture: Rudolf Hess and the Ill-Fated Peace Mission of 1941
- House of Lords Reform: A History: Volume 1. the Origins to 1937: Proposals Deferred- Book One: The Origins to 1911- Book Two: 1911-1937
- Doris Lessing - A Life Behind the Scenes: The Files of the British Intelligence Service Mi5