Historian and journalist Nigel Jones is the author of eight historical books and biographies, including acclaimed lives of Rupert Brooke and Patrick Hamilton, Peace and War: Britain in 1914 and Tower: An Epic History of the Tower of London. An authority on the poets of the Great War and the rise of Nazism and Fascism between the world wars, he has also guided historical tours of the Western Front, Germany and Italy for several years. A former deputy editor of History Today and a founding editor of BBC History magazine, he writes and reviews regularly for these and other national newspapers and magazines, and frequently appears in TV historical documentaries. His most recent book is Kitty's Salon: Sex, Spying and Surveillance in the Third Reich, published by John Blake in 2023.

The National Archives (TNA) is the official archive of the UK Government and for England and Wales, and 'guardian of some of the nation's most iconic documents, dating back more than 1,000 years'.