Autonomy Extends Market-Leading Position With Law Firms

Leading Global Law Firms Chose Autonomy iManage WorkSite and Universal Search for its Unmatched Scalability and Performance

NEW YORK, January 31, 2011 - LegalTech — Autonomy Corporation plc (LSE: AU. or AU.L), a global leader
in infrastructure software for the enterprise, today announced that its
iManage WorkSite and Universal Search solutions for law firms continue to
extend market-leadership with several major wins around the world. These
include Brownstein Hyatt Farber Schreck LLP; Brown Rudnick LLP; Crowley Fleck
PLLP; DWF LLP; Fennemore Craig; SNR Denton and Wolf Theiss. Autonomy is the
de facto standard for global law firms, powering the world's largest law
firms, including 75 of the Global 100 law firms and 10 of 10 top US law
firms.

"We chose Autonomy iManage Worksite and Universal Search to power our
next-generation global information management system, because only Autonomy
could deliver the user experience and scale required to support our vision
for a single unified information access platform for a global law firm of our
size," said Andy Jurczyk, Chief Information Officer of SNR Denton. "Our
users' expectations are shaped by their use of devices and applications in
the consumer world. It is clear that Autonomy clearly understands the demands
of today's lawyers and delivers it at an enterprise scale."

"We extended our usage of the Autonomy platform from document management
to also include email management. On a firm-wide basis, we use the IDOL-based
iManage WorkSite and Universal Search solutions every day to access and
manage tens of millions of documents and emails," said Stova Wong, Chief
Information Officer of Paul Hastings LLP. "We view Autonomy as a strategic
partner that provides a comprehensive set of information management solutions
- all based on a common platform. This enables our lawyers from around the
world to effectively manage client work electronically, while reducing IT
complexity. We are pleased to see Autonomy's continued commitment to helping
legal professionals help their clients."

The Autonomy iManage WorkSite solution is a module of the Autonomy's
Legal Information Management platform. WorkSite provides a shared environment
for storing business content and a system for tracking updates, milestones,
and communications. Documents-both paper and electronic-records, e-mail
messages, and other media are consolidated in a central library, making them
easier to find, share, and reuse. It is available both on-premise and
in-the-cloud.

Autonomy provides both law firms and corporate legal departments with the
most comprehensive set of information management and eDiscovery solutions,
allowing them to collaborate and understand the information in their
organizations. With Autonomy, law firms can quickly and easily assist their
clients and identify the potentially relevant information, perform litigation
holds and notification, and preserve the content in-place for later
collection. In addition, with Autonomy IDOL as a common platform, law firms
and their corporate clients can gain a distinct advantage by leveraging
powerful, familiar tools. This highly secure platform allows the firm and
clients to link together, seamlessly share data between their organizations
and keep ahead of aggressive case timelines for achieving a strategic edge.

"Autonomy is committed to providing advanced technology to enable law
firms to improve productivity, responsiveness and client satisfaction," said
Neil Araujo, CEO of Autonomy Protect Legal Systems. "Autonomy iManage
WorkSite and Universal Search solutions deliver unmatched conceptual
capabilities, performance, security and scalability to help law firms manage
access and security to their business content. We are very pleased to power
the world's largest law firms, including 75 of the Global 100 law firms and
10 of 10 top US law firms."

Please visit protect.autonomy.com to learn 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, Daimler AG, 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:
    Winifred Shum                        Louise Kehoe
    Autonomy (US)                        Ogilvy PR (US)
    +1-408 771 6668                      +1-415-677-2739
    wshum@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

Winifred Shum of Autonomy (US), +1-408-771-6668, wshum at autonomy.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; or Louise Kehoe of Ogilvy PR (US), +1-415-677-2739, louise.kehoe at ogilvypr.com, all for Autonomy Corporation plc