Dr Nicholas Hiley is a professional historian who has spent his career working in British universities, and running museums and archives. His particular research interest is news, censorship, and the policing of opinion in Britain from the 1880s to the 1920s. He has taught and published on the history of the modern British Secret Services, and is currently working on a history of MI5’s surveillance of trades unions, pacifists, and the Left from the 1900s to the 1920s. Dr Hiley is closely involved with the campaign to clear the names of Alice Wheeldon and her family, Socialists who in 1917 were wrongly convicted of conspiracy to murder the Prime Minister, David Lloyd George, using false evidence provided by undercover MI5 agents. In November 2019 an application for a review of the verdict in this case was lodged with the Criminal Cases Review Commission.