Holding(s) in Company

28th Oct 2010 18:28

For filings with the FSA include the annex For filings with issuer exclude the annex TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying Fidessa group plc issuer of existing shares to which voting

rights are attached: ii 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 No 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 No to qualifying financial instruments

An event changing the breakdown of voting rights No Other (please No specify):

3. Full name of person(s) subject to Ameriprise Financial, Inc and its group the notification obligation: iii

4. Full name of shareholder(s) (if See additional information under 13 different from 3.):iv

5. Date of the transaction and date 27 October 2010 on which the threshold is crossed or reached: v 6. Date on which issuer notified: 28 October 2010 7. Threshold(s) that is/are crossed Above the threshold of 5% or reached: vi, vii 8. Notified details:A: Voting rights attached to shares viii, ixClass/type of Situation previous Resulting situation after shares to the triggering the triggering transaction transaction if possible Number Number Number Number of % of voting using of of of voting rights x the ISIN CODE Shares Voting shares rights Rights Direct Direct Indirect Direct Indirect xi xii GB0007590234 n/a n/a 54,449 54,449 1,773,626 0.151% 4.915%

B: Qualifying Financial Instruments Resulting situation after the triggering transaction

Type of financial Expiration Exercise/ Number of voting % of voting

instrument date xiii Conversion Period rights that may be rights xiv acquired if the instrument is exercised/ converted.

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financ Exercise Expiration Exercise/ Number of voting % of voting

ial price date xvii Conversion rights instrument rights xix, xx instrument period refers to xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 1,828,075 5.066%

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

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 the proxy holder: n/a

11. Number of voting rights proxy n/a holder will cease to hold: 12. Date on which proxy holder will n/a cease to hold voting rights: 13. Additional information: Registered Owner

Littledown Nominees Ltd A/c 05577 73,300 Littledown Nominees Ltd A/c 05576 769,000 Littledown Nominess Ltd A/c 27642 12,349 Littledown Nominees Ltd A/c 07197 42,100 Littledown Nominees Ltd A/c 10479 1,200 Littledown Nominees Ltd A/c 07203 30,400 Littledown Nominees Ltd A/c 21667 8,900 Littledown Nominess Ltd A/c 34789 66,500 Roy Nominees A/c 104450 17,114 Mellon Nominees (UK) Ltd A/c WWSF0004002 76,307 Littledown Nominees Ltd A/c 10491 263,905 Littledown Nominees Ltd A/c 10488 202,000 Littledown Nominees Ltd A/c 10490 265,000 14. Contact name: Stacey Dryburgh, Threadneedle Group

15. Contact telephone number: +44 (0)1793 363 751 Note: Annex should only be submitted to the FSA not the issuer Annex: Notification of major interests in sharesxxii

A: Identity of the persons or legal entity subject to the notification obligation

Full name (including legal form of legal entities) Contact address (registered office for legal entities) Phone number & email Other useful information (at least legal representative for legal persons)

B: Identity of the notifier, if applicable

Full name Contact address Phone number & email Other useful information(e.g.

functional relationship with the person or legal entity subject to the notification obligation) C: Additional information

For notes on how to complete form TR-1 please see the FSA website.

vendor

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Related Shares:

Fidessa Group