Turnover rose 46% to £446m following the acquisition of NFO and operating profits rose 59% to £41m. The result helped it to shrug off a 5.2% negative impact on figures because of the strength of sterling against the US dollar.
Mike Kirkham, chief executive at TNS, said: "We expect the worldwide market for market information to grow by 3%-4% in 2004.
"Looking further ahead, we believe that the market developments will increasingly favour the major players such as TNS. Our focus is on ensuring that we take full advantage of our global network to gain the maximum benefits offered by these developments."
TNS operates consumer research for UK retailers as well as TV audience figures and consumer trends in 70 countries.
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