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10-K - 10-K - TNS INCa2197217z10-k.htm
EX-32.1 - EXHIBIT 32.1 - TNS INCa2197217zex-32_1.htm
EX-31.1 - EXHIBIT 31.1 - TNS INCa2197217zex-31_1.htm
EX-31.2 - EXHIBIT 31.2 - TNS INCa2197217zex-31_2.htm

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Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

        We consent to the incorporation by reference in the Registration Statements (Form S-8 No. 333-133459 and No. 333-113762) pertaining to the 2001 Founders' Stock Option Plan and the 2004 Long-term Incentive Plan of TNS, Inc. of our reports dated March 15, 2010, with respect to the consolidated financial statements and schedule of TNS, Inc., and the effectiveness of internal control over financial reporting of TNS, Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2009.

/s/ Ernst & Young LLP

McLean, Virginia
March 15, 2010




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Consent of Independent Registered Public Accounting Firm