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        Mobile Streams Plc Ord 0.2p
shares to which voting rights are attached:


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

An acquisition or disposal of voting rights                                      x

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):  Initial notification as per regulatory requirement


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


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


5. Date of the transaction (and date on which the threshold is                21/03/2007
crossed or reached if different):


6. Date on which issuer notified:                                             22/03/2007


7. Threshold(s) that is/are crossed or reached:                               12% to 13%


8. Notified details:





A: Voting rights attached to shares
Class/type of    Situation previous to Resulting situation after the triggering transaction
shares           the Triggering
                 transaction
 if possible     Number of  Number of  Number of    Number of voting rights   % of voting rights
using the ISIN   Shares     Voting     shares
CODE                        Rights     Direct       Direct       Indirect     Direct       Indirect
     
Ordinary
GB00B0WJ3L68     3,935,957  3,935,957  N/A          N/A          4,522,000    N/A          13.054




B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting
instrument                           Period/ Date              that may be acquired if    rights
                                                               the instrument is
                                                               exercised/ converted.



Total (A+B)
Number of voting rights                            % of voting rights

4,522,000                                         13.054%








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


Schroder Investment Management Limited     4,522,000  13.054%






Proxy Voting:

10. Name of the 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:                     The Shares referred to in section 9 are held in portfolios
                                               manages by those firms on a discretionary bases for clients
                                                         under investment management agreements.

14. Contact name:

15. Contact telephone number:



Annex Notification Of Major Interests In Shares

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

Full name (including legal form for legal entities)        Schroder Plc

Contact address (registered office for legal entities)     31 Gresham Street
                                                           London
                                                           EC2V 7QA

Phone number                                               020 7658 4331

Other useful information (at least legal representative    Chris Melrose
for legal persons)



B: Identity of the notifier, if applicable

Full name

Contact address

Phone number

Other useful information (e.g. functional relationship
with the person or legal entity subject to the
notification obligation)



C:  Additional information







                      This information is provided by RNS
            The company news service from the London Stock Exchange    

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