AUTONOMY SETS DATE FOR ANNUAL GENERAL MEETING OF SHAREHOLDERS

Cambridge, England - 24 February 2010 - Autonomy Corporation plc (LSE: AU.), a global leader in infrastructure software for the enterprise, today announced that its Board of Directors has scheduled 24 March 2010 as the date for its Annual General Meeting.

Autonomy's Annual General Meeting will be held at the company's headquarters located at Cambridge Business Park, Cowley Road, Cambridge CB4 0WZ on 24 March 2010 at 4.00 pm (London time).

All shareholders not planning to attend the meeting in person are urged to send instructions for the voting of their shares so that their shares will be represented at the meeting. Please contact your financial intermediary for the procedure to follow in order to vote your shares.

Copies of Autonomy's Notice of Annual General Meeting, Form of Proxy and Annual Report for the year ended 31 December 2009 were recently mailed to shareholders. These may also be obtained directly from Autonomy as well as from your financial intermediary. Autonomy's Annual Report for the year ended 31 December 2009 will also be available on Autonomy's web site located at http://www.autonomy.com/. To request any such materials from Autonomy, please contact Autonomy's Investor Relations either by mail c/o Autonomy Corporation plc, Cambridge Business Park, Cowley Road, Cambridge CB4 0WZ, England, or by email at investor_relations@autonomy.com.

About Autonomy Corporation plc

Autonomy Corporation plc (LSE: AU. or AU.L), a global leader in infrastructure software for the enterprise, spearheads the Meaning Based Computing movement. IDC recently recognized Autonomy as having the largest market share and fastest growth in the worldwide search and discovery market. Autonomy's technology allows computers to harness the full richness of human information, forming a conceptual and contextual understanding of any piece of electronic data, including unstructured information, such as text, email, web pages, voice, or video. Autonomy's software powers the full spectrum of mission-critical enterprise applications including pan-enterprise search, customer interaction solutions, information governance, end-to-end eDiscovery, records management, archiving, business process management, web content management, web optimization, rich media management and video and audio analysis.

Autonomy's customer base is comprised of more than 20,000 global companies, law firms and federal agencies including: AOL, BAE Systems, BBC, Bloomberg, Boeing, Citigroup, Coca Cola, Daimler AG, Deutsche Bank, DLA Piper, Ericsson, FedEx, Ford, GlaxoSmithKline, Lloyds TSB, NASA, Nestlé, the New York Stock Exchange, Reuters, Shell, Tesco, T-Mobile, the U.S. Department of Energy, the U.S. Department of Homeland Security and the U.S. Securities and Exchange Commission. More than 400 companies OEM Autonomy technology, including Symantec, Citrix, HP, Novell, Oracle, Sybase and TIBCO. The company has offices worldwide. Please visit www.autonomy.com to find out more.