Tom read history at Trinity College Dublin and gained a postgraduate degree at University College, London. Initially working in advertising, Tom switched to producing and directing television documentaries before becoming a full-time writer.
His widely acclaimed first book Hitler’s Loss: What Britain and America Gained from Europe’s Cultural Exiles (2001) was followed in 2005 by The King and the Vice Queen: George IV’s Last Scandalous Affair. 2008 saw the publication of The Nature of Despotism: From Caligula to Mugabe, the Making of Tyrants and in 2010 Heroes and Exiles: Gay Icons Through the Ages.
Tom’s The History of Cycling in Fifty Bikes was published in 2013.