Holding(s) in Company

Mobile Streams plc
23 March 2007




TR-1:       Notification of Major Interests in Shares


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


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




An acquisition or disposal of
voting rights


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


An event changing the breakdown
of voting rights

Other (please specify): Revised                               x                            
due to DTR rules   - see Section
13
                                                                          

3. Full name of person(s)
subject to the notification          Fidelity International Limited (FIL)
obligation


                                                                                 

4. Full name of shareholder(s)       See attached schedule
(if different from 3.)


                                                                               

5. Date of the transaction
(and date on which the
threshold is crossed or                     Revised due to DTR rules
reached if different)


                                                                                   

6. Date on which issuer                       19 March 2007
notified


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








8: Notified Details

A: Voting rights attached to shares
Class/type of shares     Situation previous to   Resulting situation after the triggering transaction
                         the Triggering
                         transaction

                         Number of   Number of   Number of    Number of Voting Rights % of Voting Rights
                         Shares      Voting      Shares
If possible using the                Rights
ISIN CODE                                        Direct       Direct      Indirect    Direct      Indirect

          ISIN            1,458,439   1,458,439                            1,458,439                4.21%

      GB00B0WJ3L68




B. Financial Instruments
Resulting situation after the triggering transaction
Type of Financial       Expiration Date      Exercise/Conversion Number of Voting      % of Voting Rights
Instrument                                   Period/Date         Rights that may be
                                                                 acquired if the
                                                                 instrument is
                                                                 exercised/converted





Total (A+B)
Number of Voting Rights                                % of Voting Rights

      1,458,439                                                4.21%




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

     See attached schedule




Proxy Voting:
10. Name of the proxy holder:                            Fidelity International Limited (FIL)
11. Number of voting rights proxy holder will cease/acquire to hold:               N/A
12. Date on which proxy holder will cease/acquire to hold voting                   N/A
rights:






13. Additional information:             As discussed with the FSA, prior to the implementation of the EU
                                        Transparency Directive, we aggregated the interests in shares of
                                        FMR Corp (FMR) and Fidelity International Limited (FIL) together
                                        for the purposes of shareholder reporting.  According to the new
                                        DTR rules we are now reporting the indirect holdings of FMR and
                                        FIL separately.  For this issuer FMR Corp currently has no
                                        holdings. Please note these holdings are correct as of close of
                                        business 15 March 2007
14. Contact Name
15. Contact:











FIL

Issuer name:                                     MOBILE STREAMS PLC

Current ownership percentage:                    4.21%

Total shares held:                               1,458,439

Issued share capital:                            34,639,691

                                                  SHARES HELD        NOMINEE        MANAGEMENT COMPANY

Fidelity International Limited (FIL) is the      1,458,439     BROWN BROS HARRIMN  FIL
parent                                                         LTD LUX
holding company for various direct and indirect
subsidiaries, including Fidelity Fund Management
Limited (FFML), Fidelity Investment Services Ltd
(FISL), Fidelity Gestion (FIGEST), Fidelity
Investments Advisory (Korea) Limited (FIAKL),
Fidelity Investments Management (Hong Kong)
Limited (FIMHK), Fidelity Pension Management
(FPM), Fidelity Investments Japan (FIJ) and
Fidelity
Investments International (FII), investment
managers
for various non-US investment companies and
institutional clients.





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