Autonomy Named Most Admired Company for the Second Year Running

Industry Peers Vote Autonomy Number One in Software and Computer Services in Management Today's Prestigious Awards Program

CAMBRIDGE, England and SAN FRANCISCO, December 3, 2010 - Autonomy Corporation plc (LSE: AU. or AU.L), a global leader in
infrastructure software for the enterprise, today announced that it has been
named the winner in the Software and Computer Services Sector of Management
Today's Britain's Most Admired Companies (BMAC) awards for the second year
running. Autonomy was bestowed the prestigious accolade in the 2010 edition
of the awards, following a rigorous assessment procedure. The BMAC awards
offer a unique and impartial insight into companies' success by identifying
key factors critical to corporate reputation, and assessing businesses
against these criteria based on a peer review by their rivals. BMAC's unique
methodology has made the awards a benchmark for business superiority and
industry leadership.

"For 18 years now, Britain's Most Admired Companies awards have been
getting to the heart of what makes businesses successful," commented Matthew
Gwyther, Editor of Management Today. "By asking top companies and their
C-level executives to assess their rivals, the awards offer a unique insight
into what it takes to be admired in business. Winning this prestigious
accolade for a second year running is a clear indication that Autonomy is
held in high esteem by its peers and we offer the company our sincere
congratulations for this well-deserved recognition."

The BMAC awards are based on the results of a survey which polls 230
companies over 23 sectors based on nine key performance criteria, including
quality of management, capacity to innovate, and ability to develop top
talent. Conducted by Professor Mike Brown of Birmingham City Business School
and published by Management Today magazine, the survey uses responses from
board level representatives, as well as analysts and City commentators, to
compile a peer review of each company's corporate reputation, as seen by its
most clued-up critics - its competitors. Autonomy was revealed the winner of
the coveted accolade at an exclusive awards ceremony held at Claridges in
London that brought together top executives from the UK's most successful
companies.

Autonomy was evaluated against various key performance indicators, among
which the quality of its products - next-generation applications that enable
computers to process human-friendly data by detecting patterns in it, thereby
revolutionizing the way people interact with information. At the heart of
Autonomy's infrastructure software lies the Intelligent Data Operating Layer
(IDOL), which employs a unique combination of pattern-matching and concept
extraction technologies.

IDOL can form a conceptual and contextual understanding of all content in
an enterprise, automatically analyzing any piece of information from over
1,000 different data formats to enable over 500 intelligent operations on
content. Autonomy's technology eliminates the manual and costly human
intervention, which has traditionally been required to process and analyze
such information, by performing these functions automatically and in
real-time. This represents substantial savings for every type of organization
and industry and is driving the accelerated adoption of Autonomy's technology
across a diverse range of vertical markets.

"Since its inception in 1996, Autonomy has experienced a meteoric rise to
become a global enterprise whose products are used by tens of thousands of
companies worldwide," said Dr Mike Lynch, Founder and CEO of Autonomy. "We
owe this success to the hard work and dedication of our employees and the
support of our investors. We are delighted to see it has also earned us the
respect and admiration of our industry peers."

Please visit www.autonomy.com to find out more.

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.

    Autonomy Editorial Contacts:

    Maria Chotreva                        David Vindel
    Autonomy (UK)                         The Red Consultancy (UK)
    +44-207-907-2300                      +44-207-025-6529
    maria.chotreva@autonomy.com           david.vindel@redconsultancy.com

    Edward Bridges                        Louise Kehoe
    Financial Dynamics (UK)               Ogilvy PR (US)
    +44-207-831-3113                      +1-415-677-2739
    edward.bridges@fd.com                 louise.kehoe@ogilvypr.com

Maria Chotreva of Autonomy (UK), +44-207-907-2300, maria.chotreva 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 Louise Kehoe of Ogilvy PR (US), +1-415-677-2739, louise.kehoe at ogilvypr.com, all for Autonomy