Holding(s) in Company

CSS Stellar PLC
22 August 2007


TR-1: Notifications of Major Interests in Shares



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


2. Reason for notification (yes/no)                                                        

An acquisition or disposal of voting rights                                             Yes

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 event changing the breakdown of voting rights                                        No  

Other (please specify):______________                                                   No
                                                     

3. Full name of person(s) subject to notification    Gartmore Investment Limited
obligation:
                                                     

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

5. Date of transaction (and date on which the        20th August 2007
threshold is crossed or reached if different):
                                                     

6. Date on which issuer notified:                    21st August 2007
                                                     

7. Threshold(s) that is/are crossed or reached:      15%




                                       
8: Notified Details
A: Voting rights attached to shares


Class/type of shares   Situation previous to   Resulting situation after the triggering transaction
                       the triggering
If possible use ISIN   transaction
code                   Number of   Number of   Number of      Number of voting       Percentage of voting
                       shares      voting      shares         rights                 rights
                                   rights

                                                              Direct    Indirect     Direct    Indirect

GB0002673332           4,147,197   4,147,197   4,322,197               4,322,197              15.128%


B: Financial Instruments


Resulting situation after the triggering transaction


Type of financial    Expiration date      Exercise/ conversion No. of voting rights  Percentage of voting
instrument                                period/date          that may be acquired  rights
                                                               (if the instrument
                                                               exercised/converted)







Total (A+B)


Number of voting rights                              Percentage of voting rights

4,322,197                                            15.128%





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



Proxy Voting:


10. Name of proxy holder:


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


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




13. Additional information:                                          All shares are held indirectly

                                                      All figures are based on the Companies issued share
                                                      capital of   28,571,136 as provided by Exshare

                                                      E mail contact [e-mail]

14 Contact name:                                      Mark Ireland


15. Contact telephone name:                           0207 078 1432










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