Sonia Purnell is an acclaimed biographer and freelance journalist. After starting her career at the Economist Intelligence Unit she went on to a senior position on the Daily Telegraph's City pages, and later moved to the Daily Mail, where she was Whitehall Editor. Her first book, Just Boris: A Tale of Blond Ambition, was a candid portrait of London Mayor Boris Johnson, informed by her time working alongside him in Brussels in the 1990s. First Lady: The Life and Wars of Clementine Churchill was first published in 2015 to great critical acclaim. In March 2019, she published her third book A Woman of No Importance: The Untold Story of WWII's Most Dangerous Spy, Virginia Hall, a New York Times bestseller. She lives in London with her husband and two sons.