Reuters is an international news agency headquartered in London, England. It is a division of Thomson Reuters. 

Until 2008, the Reuters news agency formed part of an independent company, Reuters Group plc, which was also a provider of financial market data. Since the acquisition of Reuters Group by the Thomson Corporation in 2008, the Reuters news agency has been a part of Thomson Reuters, making up the media division. Reuters transmits news in English, French, Arabic, Spanish, German, Italian, Portuguese, Russian, Japanese, Korean, Urdu, and Chinese. It was established in 1851. 

The Reuter agency was established in 1851 by Paul Julius Reuter in Britain at the London Royal Exchange. Paul Reuter worked at a book-publishing firm in Berlin and was involved in distributing radical pamphlets at the beginning of the Revolutions in 1848. These publications brought much attention to Reuter, who in 1850 developed a prototype news service in Aachen using homing pigeons and electric telegraphy from 1851 on in order to transmit messages between Brussels and Aachen. 

Upon moving to England, he founded Reuter's Telegram Company in 1851. Headquartered in London, the company initially covered commercial news, serving banks, brokerage houses, and business firms. The first newspaper client to subscribe was the London "Morning Advertiser" in 1858. Afterwards more newspapers signed up, with "Britannica Encyclopedia" writing that "the value of Reuters to newspapers lay not only in the financial news it provided but in its ability to be the first to report on stories of international importance." Reuter's agency built a reputation in Europe and the rest of the world as the first to report news scoops from abroad. Reuters was the first to report Abraham Lincoln's assassination in Europe, for instance, in 1865. In 1872, Reuters expanded into the far east, followed by South America in 1874. Both expansions were made possible by advances in overland telegraphs and undersea cables. In 1883, Reuters began transmitting messages electrically to London newspapers.
Where?
in Aachen