Home Fairfield Stamford IT firm The TNS Group acquires Chelsea Computer FairfieldLatest NewsMergers & AcquisitionsPremium ContentTechnology Stamford IT firm The TNS Group acquires Chelsea Computer By Kevin Zimmerman - September 12, 2016 SHARE Facebook Twitter TNS specializes in the financial, nonprofit, health care and shipping industries servicing Fairfield, Westchester, and Metro New York City. This content is for Westfair Online members only. Please Sign in / Join to view this content. Become a member by Registering Here.