Autonomy Corporation PLC 06 May 2005 Charlotte Herbert Autonomy Corporation plc +44 (0) 1223 448 000 +1 415/243-9955 charlotteh@autonomy.com Amy Sezak Edward Bridges Outcast Communications Financial Dynamics + 415/392.8282 +44 207 831 3113 amy@outcastpr.com edward.bridges@fd.com VODAFONE EXTENDS CONTRACT WITH AUTONOMY Cambridge, England - 9 May, 2005 - Autonomy Corporation plc (LSE: AU. or AUTN.L), a global leader in infrastructure software for the enterprise, today announced that Vodafone, the world's largest mobile network provider, has extended its agreement with Autonomy to power efficiency applications across multiple territories. Autonomy has previously entered into agreements with Vodafone in multiple territories. The Vodafone Group is the world's leading telecommunications company serving over 150 million customers around the globe. About Autonomy Autonomy Corporation plc (LSE: AU. or AUTN.L) is a global leader in infrastructure software for the enterprise. Autonomy's technology powers applications dependent upon unstructured information including call center, customer relationship management, knowledge management, enterprise portals, enterprise resource planning, online publishing and security applications. Autonomy's customer base comprises more than 1,000 global companies and organizations including, among others, BAE Systems, Ford, Ericsson, Shell, Nestle, BBC, Reuters, Hutchinson 3G, Royal Sun Alliance, Sun Microsystems, Philips, Boeing, Schneider Electric, Coca Cola, GlaxoSmithKline, Butterworths, Citigroup, ABN AMRO, Deutsche Bank, Nomura, the New York Stock Exchange, Daimler Chrysler, Kraft Foods, Lloyds TSB, the U.S. Department of Homeland Security, the U.S. Securities and Exchange Commission, NASA and the U.S. Department of Energy. Strategic reseller and OEM partners include leading companies such as ATG, BEA, Business Objects, Citrix, Computer Associates, EDS, IBM Global Services, Novell, Novient, Veritas, Vignette, Supportsoft and Sybase. The company has offices worldwide. The Autonomy Group includes: Aungate, a leading supplier of electronic communications management technology for regulatory compliance in the enterprise; Audentify, a leading supplier of next-generation contact center technology; and Virage, a leading provider of rich media communication and content management software. This information is provided by RNS The company news service from the London Stock Exchange