1890s

During this decade, Henry Gordon Jago and George Litefoot solved countless mysteries involving paranormal or alien phenomena in London, (AUDIO: The Mahogany Murderers, The Museum of Curiosities et al) as did the Paternoster Gang, (TV: A Good Man Goes to War, The Snowmen, et al.) and Torchwood One. (AUDIO: The Victorian Age)

By this time, London was the most populous city on Earth. (AUDIO: Jago & Litefoot & Patsy)