The deal gives 14 Interpublic agencies, including Universal McCann, Initiative and Lowe Worldwide, access to TNS's database of advertising information.
According to latest figures from TNS Media Intelligence, the media monitoring arm of market research giant TNS, currently monitors around $145bn worth of advertising expenditure across 2.2m brands.
Susan Nathan, senior vice-president and director of media knowledge at Universal McCann, said: "TNS Media Intelligence is the gold standard for competitive advertising intelligence. The company's depth and breadth of media and market coverage is first rate."
Steven Fredericks, president and CEO of TNS Media Intelligence, said: "We have long-standing business relationships with many Interpublic agencies and we look forward to continue to provide superior value to the entire Interpublic organisation."
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