2020 Winner Conservative Revolutionary: The Lives of Lewis Namier by DW Hayton
Shortlist Diderot and the Art of Thinking Freely by Andrew S Curran Eric Hobsbawm: A Life in History by Richard J Evans Michael Tippett: The Biography by Oliver Soden Prince Albert: The Man Who Saved the Monarchy by AN Wilson
2019 Winner A Certain Idea of France by Julian Jackson
Shortlist Thomas Cromwell by Diarmaid MacCulloch Churchill: Walking with Destiny by Andrew Roberts The New Negro: The Life of Alain Locke by Jeffrey C Stewart
2018 Winner Isabella of Castile: Europe’s First Great Queen by Giles Tremlett
Shortlist Be Like The Fox: Machiavelli’s Lifelong Quest For Freedom by Erica Benner The Tartan Turban: In Search of Alexander Gardner by John Keay Lenin the Dictator: An Intimate Portrait by Victor Sebestyen Becoming Hitler: The Making of a Nazi by Thomas Weber
Winners 2017 Citizen Clem by John Bew
2016 The Lost Imperialist - Lord Dufferin, Memory and Mythmaking in an Age of Celebrity by Andrew Gailey
2015 A Spy Among Friends: Kim Philby and the Great Betrayal by Ben Macintyre
2014 Margaret Thatcher: Volume 1: Not for Turning by Charles Moore
2013 Queen Anne by Anne Somerset
2012 How to Survive The Titanic by Frances Wilson
2011 Edward Heath – The Authorised Biography by Philip Ziegler
2010 The Frock-Coated Communist by Tristram Hunt
2009 Florence Nightingale: The Woman and Her Legend by Mark Bostridge
2008 God's Architect: Pugin & the Building of Romantic Britain by Rosemary Hill
2007 Henry VIII’s Last Victim – The Life and Times of Henry Howard, Earl of Surrey by Jessie Childs
2006 Petain by Charles Williams
2005 Making Friends with Hitler: Lord Londonderry and Britain's Road to War by Ian Kershaw
2004 Mad Madge: Margaret Cavendish, Duchess of Newcastle, Royalist, Writer and Romantic by Katie Whitaker
2003 The Long Recessional: The Imperial Life of Rudyard Kipling by David Gilmour