Autonomy Positioned in Leaders Quadrant of the 2010 Web Content Management Magic Quadrant

CAMBRIDGE, England and SAN FRANCISCO, September 1, 2010 - Autonomy Corporation plc (LSE: AU. or AU.L), a global leader in
infrastructure software for the enterprise, today announced that it has been
positioned by Gartner, Inc. in the Leaders quadrant of the Magic Quadrant for
Web Content Management.(1)

"We consider Gartner's placement of Autonomy in the Leaders quadrant as
further confirmation of our unique and transformative vision for the web
content management market," said Rafiq Mohammadi, CEO of Autonomy Promote.
"Autonomy's Meaning Based Marketing platform is built for the next-generation
of marketers looking to understand, act on, and optimize all forms of
information - linking together internal systems with external data in order
to deliver the most compelling and targeted content to customers across every
channel. By taking a meaning-based approach to web content, Autonomy provides
an unparalleled platform that enables businesses to engage with customers and
ultimately drive revenue and gain market share."

About the Magic Quadrant

The Magic Quadrant is copyrighted 2010 by Gartner, Inc. and is reused
with permission. The Magic Quadrant is a graphical representation of a
marketplace at and for a specific time period. It depicts Gartner's analysis
of how certain vendors measure against criteria for that marketplace, as
defined by Gartner. Gartner does not endorse any vendor, product or service
depicted in the Magic Quadrant, and does not advise technology users to
select only those vendors placed in the "Leaders" quadrant. The Magic
Quadrant is intended solely as a research tool, and is not meant to be a
specific guide to action. Gartner disclaims all warranties, express or
implied, with respect to this research, including any warranties of
merchantability or fitness for a particular purpose.

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, Deutsche Bank, DLA Piper, Ericsson,
FedEx, Ford, GlaxoSmithKline, Lloyds Banking Group, 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.

    (1) Gartner "Magic Quadrant for Web Content Management" by Mick
        MacComascaigh, Toby Bell, and Jim Murphy, August 19, 2010

    Autonomy Editorial Contacts:

    Randy Cairns                Louise Kehoe
    Autonomy (US)               Ogilvy PR (US)
    +1-408-953-7111             +1-415-677-2739
    randy.cairns@autonomy.com   louise.kehoe@ogilvypr.com

    Edward Bridges              David Vindel
    Financial Dynamics (UK)     The Red Consultancy (UK)
    +44-207-831-3113            +44-207-025-6529
    edward.bridges@fd.com       david.vindel@redconsultancy.com

Randy Cairns of Autonomy (US), +1-408-953-7111, randy.cairns at autonomy.com; or Louise Kehoe of Ogilvy PR (US), +1-415-677-2739, louise.kehoe at ogilvypr.com; or Edward Bridges of Financial Dynamics (UK), +44-207-831-3113, edward.bridges at fd.com; or David Vindel of The Red Consultancy (UK), +44-207-025-6529, david.vindel at redconsultancy.com, all for Autonomy