The Last Days of the Romanovs: Tragedy at Ekaterinburg

Diana: Her True Story - In Her Own Words: The Sunday Times Number-One Bestseller

Jonathan Edwards and the Ministry of the Word: A Model of Faith and Thought

The Victoria Letters: The official companion to the ITV Victoria series

Revenge: Meghan, Harry and the war between the Windsors. The Sunday Times no 1 bestseller

The Taj Mahal: A History

Four Sisters: The Lost Lives of the Romanov Grand Duchesses

Meghan and Harry: The Real Story: Persecutors or Victims

The Race to Save the Romanovs: The Truth Behind the Secret Plans to Rescue Russia's Imperial Family

Lady in Waiting: My Extraordinary Life in the Shadow of the Crown

Caught in the Revolution: Petrograd, 1917

The Six Wives of Henry VIII: Find out the truth about Henry VIII’s wives

After the Romanovs: the extraordinary lives of Russian exiles in Paris between the wars

The Monarchy: A Critique of Britain's Favourite Fetish

Queen Victoria: A Biographical Companion

Vidal: The Autobiography

Catherine the Great: Portrait of a Woman

Beautiful For Ever: Madame Rachel of Bond Street - Cosmetician, Con-Artist and Blackmailer

Victoria: The Queen: An Intimate Biography of the Woman Who Ruled an Empire

In Search of Mary Seacole: The Making of a Cultural Icon