His Royal Highness the Duke of York Visits Autonomy Headquarters

Acclaims Autonomy's Success as a Shining Example of a British Software Company Leading the Way in International Trade and Innovation

CAMBRIDGE, England and SAN FRANCISCO, May 25, 2010 - Autonomy Corporation plc (LSE: AU. or AU.L), a global leader in
infrastructure software for the enterprise, today announced that His Royal
Highness, Prince Andrew, the Duke of York will be visiting its European
headquarters in the Cambridge Business Park. During his visit today His Royal
Highness will learn about Autonomy's unparalleled journey from the
engineering research labs of Cambridge University a little over a decade ago
to become the largest software company in the UK, a FTSE 100 company and the
winner of two Queen's Awards for Enterprise in the Innovation and
International Trade categories. In addition to introductions from Autonomy's
senior management executive team, His Royal Highness the Duke of York will
meet Autonomy employees from a range of departments including Autonomy's
award-wining Research & Development team which leads the world in
meaning-based software technology solutions.

Autonomy was founded on a simple yet powerful premise: enabling computers
to detect patterns in information the way humans do in order to dramatically
change the way in which we interact with information. Autonomy's cornerstone
technology, the Intelligent Data Operating Layer (IDOL), is able to form an
understanding of all data, including structured, semi-structured and
unstructured content, and automatically process it. Thanks to its
ground-breaking pattern-recognition capabilities, IDOL is universally
recognized for its ability to penetrate all types of information silos,
enabling organizations to derive maximum value from their corporate assets
and automate a raft of operations for business gain and risk mitigation.

"We are honored to welcome His Royal Highness the Duke of York in our
European headquarters in the Cambridge Business Park," said Dr Mike Lynch,
Founder and CEO of Autonomy. "The truly talented professionals the Duke of
York will meet today are behind an ever growing number of world-first
solutions which have revolutionized the IT industry. Despite our global
penetration and offices in over 40 countries around the world, our Cambridge
headquarters still host Autonomy's largest R&D department in the world. We
are proud of Autonomy's British origins and we are delighted to see our
success recognized by the Duke of York."

About Autonomy

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, Nestle, 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.

Autonomy and the Autonomy logo are registered trademarks or trademarks of
Autonomy Corporation plc. All other trademarks are the property of their
respective owners.

    Autonomy Editorial Contacts:
    Assia Svinarova              David Vindel
    Autonomy (UK)                The Red Consultancy (UK)
    +44-1223-448000              +44-207-025-6529
    assias@autonomy.com          david.vindel@redconsultancy.com

    Edward Bridges               Ian Bain
    Financial Dynamics (UK)      The Red Consultancy (US)
    +44-207-831-3113             +1-415-618-8806
    edward.bridges@fd.com        ian.bain@redconsultancy.com

Assia Svinarova of Autonomy (UK), +44-1223-448000, assias at autonomy.com; or David Vindel of The Red Consultancy (UK), +44-207-025-6529, david.vindel at redconsultancy.com; or Edward Bridges of Financial Dynamics (UK), +44-207-831-3113, edward.bridges at fd.com; or Ian Bain of The Red Consultancy (US), +1-415-618-8806, ian.bain at redconsultancy.com, all for Autonomy Corporation plc