Holding(s) in Company

4th Apr 2011 17:23

TR-1: Notifications of Major Interests in Shares

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

PLC

2. Reason for notification (yes/no)

No

An acquisition or disposal of voting rights

No

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are

attached No

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

Yes

An event changing the breakdown of voting rights

No

Other (please specify):___________________________

Ameriprise Financial, Inc. and its group

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

obligation: See additional information under 13.

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

31 March 2011

5. Date of transaction and date on which the threshold

is crossed or reached: 04 April 2011

6. Date on which issuer notified:

Below the threshold of 5%

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

8: Notified Details

A: Voting rights attached to shares

Class/type of shares Situation previous to the triggering transaction Resulting situation after the triggering transaction

If possible use ISIN Number of shares Number of voting rights Number Number of voting rights Percentage of voting code of rights shares Direct Direct Indirect Direct Indirect GB0007590234 1,828,075 1,828,075 48,424 48,424 1,764,388 0.132% 4.819%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of Expiration Exercise/ No. of voting rights that may be Percentage financial date conversion acquired if the instrument is of voting instrument period exercised/converted. rights C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of Exercise Expiration Exercise / No. of voting

Percentage offinancial Price date conversion rights instrument voting rightsinstrument period refers to Nominal Delta Total (A+B+C)

Number of voting rights Percentage of voting rights

1,812,812 4.951%

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

Ameriprise Financial, Inc., which through intermediate holding companies

controls the voting rights of Columbia Management Investment Advisers, Columbia Wanger Asset Management, Threadneedle Management Luxembourg S.A. and

Threadneedle Asset Management Holdings Ltd, which itself controls the voting rights of Threadneedle Asset Management Ltd, Threadneedle International Ltd

andThreadneedle Pensions Ltd. Proxy Voting: 10. Name of proxy holder: N/A

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. Registered Owner Additional information: Littledown Nominees Ltd A/c ZLA05 75,700 Littledown Nominees Ltd A/c ZLA07 793,000 Littledown Nominees Ltd A/c 27642 11,924 Littledown Nominees Ltd A/c 07197 36,500 Littledown Nominees Ltd A/c 10479 940 Littledown Nominees Ltd A/c ZLA12 27,000 Littledown Nominees Ltd A/c ZLA14 7,500 Littledown Nominees Ltd A/c 34789 66,850 Roy Nominees A/c 104450 10,657 Mellon Nominees (UK) Ltd A/c

WWSF0004002 76,307

Littledown Nominees Ltd A/c 10491 261,434 Littledown Nominees Ltd A/c 10488 180,000 Littledown Nominees Ltd A/c 10490 265,000

14 Contact Stacey Dryburgh, Threadneedle group

name:

15. Contact +44 (0) 1793 363 751 telephone

name:

vendor

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Related Shares:

Fidessa Group