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)

After the Doctor regenerated into the Twelfth Doctor, he and Clara ended up in dinosaur times and tried to escape a T-Rex.

They left the time period but the TARDIS was stuck inside a T-Rex. In the 1890s Vastra, Jenny, and Strax went outside to see a T-Rex in the River Thames then the T-Rex spitted out a police box. (TV: Deep Breath)