The Thomson Corporation was one of the world's largest information companies. Thomson was active in financial services, healthcare sectors, law, science & technology research, and tax & accounting sectors. The company operated through five segments (2007 onwards): Thomson Financial, Thomson Healthcare, Thomson Legal, Thomson Scientific, and Thomson Tax & Accounting.
Until 2007, Thomson was also one of the world's leading providers of higher education textbooks, academic information solutions and reference materials. On October 26, 2006, Thomson announced the proposed sale of its Thomson Learning assets. In May 2007, Thomson Learning was acquired by Apax Partners and subsequently renamed Cengage Learning in July. The Thomson Learning brand was used through the end of August, 2007.
Subsequently, on October 15, 2007, Educational Testing Service (ETS), the world leader in educational research and assessment, finalized acquisition of Thomson's Prometric. Thomson sold its global network of testing centers in 135 countries, for a reported $435 million. Prometric now operates as a wholly owned subsidiary of ETS.
On May 15, 2007, The Thomson Corporation reached an agreement with Reuters to combine the two companies, a deal valued at $17.2 billion. On 17 April 2008 the new company was created under the name of Thomson Reuters. The new CEO of Thomson Reuters is Tom Glocer, the former head of Reuters, while the chairman is David Thomson formerly of the Thomson Corporation.
Although officially a Canadian company, Thomson was run from its operational headquarters in Stamford, Connecticut. It remained Canadian owned.
Thompsons were providing books for schools. Now Cengage Learning have taken over that role.