Four Sisters: The Lost Lives of the Romanov Grand Duchesses

An African History of Africa: Instant Sunday Times bestseller and shortlisted for the Nero Book Awards

Crossing the Floor: The Story of Tariana Turia

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

The Great Game

The Last Days of the Romanovs: Tragedy at Ekaterinburg

Team of Rivals: The Political Genius of Abraham Lincoln

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

The Command of the Ocean: A Naval History of Britain 1649-1815

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

Stuff Matters: The Strange Stories of the Marvellous Materials that Shape Our Man-made World

Queen Victoria: A Biographical Companion

The Boyer Brothers of Baseball

Citizens: A Chronicle of The French Revolution

The Rebel Romanov

These Truths: A History of the United States

Magnificent Obsession: Victoria, Albert and the Death That Changed the Monarchy

The Indian Mutiny

Caught in the Revolution: Petrograd, 1917

How to be a Victorian