Holding(s) in Company

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Exercise
price

Expiration
date

Exercise/
Conversion
period

Number of voting
rights instrument
refers to

% of voting rights

RNS Number : 1203L

Experian plc

26 July 2011

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Experian plc

2 Reason for the notification (please tick the appropriate box or boxes):
An acquisition or disposal of voting rights		Yes
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments
An event changing the breakdown of voting rights
Other (please specify):

3. Full name of person(s) subject to the notification obligation:

Artisan Partners Holdings LP, Artisan Partners Limited Partnership, Artisan Partners UK LLP, Artisan Investments GP LLC, Artisan Investment Corporation, Artisan Partners Limited, ZFIC, Inc., Andrew A. Ziegler, Carlene M. Ziegler

4. Full name of shareholder(s) (if different from 3.):

State Street Bank, Mellon Bank, Bank of New York, Northern Trust, Fifth Third, CIBC Mellon, JP Morgan Chase, Fidelity, Brown Brothers Harriman, State Street Bank - Luxembourg

5. Date of the transaction and date on which the threshold is crossed or reached:

February 11, 2011

6. Date on which issuer notified:

July 25, 2011 (original notification dated February 15, 2011 not received)

7. Threshold(s) that is/are crossed or reached:

Below 5%

8. Notified details:
A: Voting rights attached to shares
Class/type of shares if possible using the ISIN CODE	Situation previous to the triggering transaction		Resulting situation after the triggering transaction
	Number of Shares	Number of Voting Rights	Number of shares	Number of voting rights		% of voting rights
				Direct	Indirect	Direct	Indirect
Ordinary Shares GB00B19NLV48	52,341,605	5.12%			50,901,871		4.98%

B: Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date	Exercise/ Conversion Period	Number of voting rights that may be acquired if the instrument is exercised/ converted.	% of voting rights

Total (A+B+C)

Number of voting rights

Percentage of voting rights

50,901,871

4.98%

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:

Artisan Partners Limited Partnership ("APLP"), a U.S. registered investment adviser, is a limited partnership organized under the laws of the State of Delaware on March 26, 2009. Control of APLP is vested in its general partner, Artisan Investments GP LLC, a limited liability company organized under the laws of the State of Delaware on March 26, 2009. Artisan Partners Holdings LP is the sole member of Artisan Investments GP LLC, and is the sole limited partner of Artisan Partners Limited Partnership. Artisan Partners Limited is a wholly owned subsidiary of Artisan Partners Holdings LP organized in England and Wales to serve as the founding partner of Artisan Partners UK LLP. Artisan Partners UK LLP is a limited liability partnership established in England and Wales for the purpose of conducting business operations in the United Kingdom. Artisan Partners UK LLP serves as an investment sub-adviser to APLP with respect to client accounts managed in accordance with APLP's Global Equity investment strategy. Control of Artisan Partners Holdings LP (formerly named Artisan Partners Limited Partnership) is vested in its general partner, Artisan Investment Corporation. All of the outstanding stock of Artisan Investment Corporation is owned by ZFIC, Inc., a corporation organized under the laws of the State of Wisconsin. Andrew A. Ziegler and Carlene M. Ziegler each own 50% of the voting stock of ZFIC, Inc. APLP, pursuant to advisory contracts, has the power to purchase and sell securities on behalf of its clients and the power to vote for most clients. Persons other than APLP are entitled to receive all dividends from, and proceeds from the sale of, all of the securities reported hereunder.

Proxy Voting:

10. Name of the proxy holder:

Artisan Partners Limited Partnership

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights:

N/A

13. Additional information:

14. Contact name:

Ronan Hanna

15. Contact telephone number:

+ 353 (0) 1 846 9128