Yorkshire

Yorkshire was a traditional county in the north of England. (TV: The Crimson Horror)

The Thirteenth Doctor's favourite type of tea was Yorkshire Tea. (PROSE: The Good Doctor)

Geography
Wetherby, (PROSE: Have You Seen This Man?) Samhain (PROSE: Death of the Author) Bradford, (TV: The Crimson Horror) and Huddersfield were located in Yorkshire, (PROSE: Illegal Alien) and Sheffield was located in South Yorkshire. (TV: Arachnids in the UK)

Northallerton, (PROSE: The Ethereal) Hawkswick, (PROSE: Casualties of War) and Whitby were towns and villages in North Yorkshire. (PROSE: The Dreadful Flap) The Eighth and Tenth Doctors expressed a love for the sea-side town of Whitby. (PROSE: Mad Dogs and Englishmen, COMIC: The Black Sky) The Yorkshire Dales were a popular area for tourism, enjoyed among others by a newly-retired Alistair Gordon Lethbridge-Stewart. (AUDIO: New Pastures)

19th century
From her birth in 1820 to her death in 1898, Florence Sundvik was an inhabitant of the village of Maiden's Point. Mary Eliza Millington was born in the village, but died four days after her birth in 1898. (TV: The Curse of Fenric)

In 1893, Winifred Gillyflower founded the community of Sweetville in the county. The Eleventh Doctor and Clara Oswald investigated a series of deaths in the area, which he referred to as "the Crimson Horror". (TV: The Crimson Horror)

20th century
During World War I, Tommy Brockless served in the 10th West Yorkshire regiment, (TV: To the Last Man) and John Sykes served in the 15th West Yorkshire unit. (PROSE: Casualties of War) Both suffered from shell shock. (TV: To the Last Man, PROSE: Casualties of War)

In 1914, Hawkswick Hall in Hawkswick, North Yorkshire was converted into a home for shell-shocked soldiers. (PROSE: Casualties of War)

On 18 December 1926, the Tenth Doctor and Donna Noble took Agatha Christie to the Yorkshire town of Harrogate to recover after her encounter with the Vespiform. (TV: The Unicorn and the Wasp)

Johannes Rausch was a prisoner of war at the Eden Camp in Yorkshire and stayed behind in England after the war to marry an English girl. (AUDIO: Unregenerate!)

As a student, Polly Wright frequently visited the Yorkshire Moors. (PROSE: Invasion of the Cat-People)

Tara Mishra fought alongside UNIT against the Cybermen when they converted half of Halifax. (COMIC: The Bidding War)

In 1998, when Jason Kane was fifteen, he ran away from his abusive father and spent two and a half years wandering around Yorkshire, Centrepoint and Mile End. (PROSE: Death and Diplomacy)

Martin Chisom grew rhubarb in Yorkshire, and pondered if the vegetable had ever been worshipped there. (PROSE: Lost in the Wakefield Triangle)

21st century
In 2002, Sarah Jane Smith investigated the Huang Ti Clinic in West Yorkshire. (AUDIO: The Tao Connection)

In 2007, when ghosts began appearing all over the world, they also appeared in Yorkshire. James wrote an SMS to Ghostwatch and asked them why they were always filming in London. He told them that there were ghosts in Yorkshire too. The ghosts turned out to be Cybermen. (WC: Ghostwatch)

Soon after regenerating, the Thirteenth Doctor met her companions Graham O'Brien, Ryan Sinclair and Yasmin Khan in the Peak District, in 2018, and returned with them to Sheffield. After accidentally teleporting her friends to outer space, (TV: The Woman Who Fell to Earth) the Doctor eventually managed to return them to Sheffield, (TV: Arachnids in the UK) where they returned on a number of occasions. (TV: Demons of the Punjab, PROSE: The Secret in Vault 13)

Undated events
At some point prior to 2005, the Ninth Doctor visited a police station in Wetherby. (PROSE: Have You Seen This Man?)

Behind the scenes
Frazer Hines, Mary Tamm, David Brierley and Jodie Whittaker were all born in Yorkshire.

Yorkshire