Holding(s) in Company

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:

RPS Group PLC

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

No

An acquisition or disposal of qualifying 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

 No

An event changing the breakdown of voting rights

 No

Other (please specify):

Acquisition of Columbia Management Investment Advisors LLC and Columbia Wanger Asset Management by Ameriprise Financial Inc, 1099 Ameriprise Financial Center, Minneapolis, MN 55474, USA

 Yes

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

 Ameriprise Financial, Inc. and its group

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

 See additional information under 13.

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

 1st May 2010

6. Date on which issuer notified:

 03 May 2010

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

 Above the threshold of 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

Direct

Indirect

Direct

Indirect

 GB0007594764

 N/A

N/A

177,000

177,000

11,884,291

0.082%

5.509%

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

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

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 12,061,291

 5.591%

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

Proxy Voting:

10. Name of the 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. Additional information:

14. Contact name:

 Company Secretary, Threadneedle group

15. Contact telephone number:

 +44 (0)20 7464 5000