Kantar TNS (formerly known as Taylor Nelson Sofres) is a market research and market information group. Formerly listed on the London Stock Exchange and a constituent of the FTSE 250 Index, the firm was acquired by WPP Group in October 2008 for 1.6 billion pounds. The history of TNS as a market research company began in 1946 with the establishment of National Family Opinion (NFO) in the United States. Since then, various mergers and acquisitions involving large companies from the US, Europe and Asia Pacific eventually became the Taylor Nelson Sofres group. The 1960s saw the establishment of the six main companies that today form part of TNS. Starting with NFO in the 1940s, Intersearch in the US in 1960; then AGB in the UK in 1962; Sofres in France in 1963; Frank Small Associates (FSA) in Australia in 1964; Taylor Nelson in the UK in 1965. Over the 60s, 70s, 80s and 90s, these companies grew significantly as individual businesses.