Poland

Poland was a country located in Europe on Earth.

In 1583, John Dee and Edward Kelley briefly visited Poland during their tour of Europe. (MA: Managra)

On 1st September 1939, Germany invaded Poland, starting World War II. (NA: Timewyrm: Exodus)

By the 1990s, Polish troops, including Sergeant Zbrigniev, were members of the United Kingdom branch of UNIT. (DW: Battlefield)

At least one human worker placed under mind control by the Sontarans in the ATMOS factory was an emigrant to the UK from Poland. (DW: The Sontaran Strategem)