BBC World Service
From Tardis Wiki, the free Doctor Who reference
The BBC World Service was a radio network that was important at least some of the to the people of Prague around the fall of communism in 1989. Rhoda Hoffman, a Czech art student in Prague who was agitating for democracy, told the Eleventh Doctor, Rory and Amy that it was "fantastic". (COMIC: The Broken Man)
During Christmas 1969, American soldiers in Vietnam during the Vietnam War listened to two programmes from the BBC World Service, Carols from King's and I'm Sorry I'll Read That Again. (PROSE: Interesting Times)