Holding(s) in Company

Soco International PLC
11 April 2008


TR-1: notification of major interests in shares

1. Identity of the issuer or the underlying            SOCO International PLC
issuer of existing 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):                                  
--------------------------------------------             
3. Full name of person(s) subject to the                BlackRock, Inc.
notification obligation:                                --------------------
-------------------------------
4. Full name of shareholder(s) (if different
from 3.):                                               
-------------------------------
5. Date of the transaction (and date on which           9th April 2008
the threshold is crossed or reached if                  --------------------
different):
-------------------------------
6. Date on which issuer notified:                       11th April 2008
-------------------------------                         --------------------
7. Threshold(s) that is/are crossed or reached:         Holding above 5%
-------------------------------                         --------------------
8. Notified details:
-------------------------------                              

A: Voting rights attached to shares
Class/type   Situation previous to    Resulting situation after the triggering
of shares    the Triggering           transaction
             transaction
if possible
using the    Number of Number of      Number Number of voting    % of voting
ISIN CODE    Shares    Voting Rights  of     rights              rights
                                      shares
                                      Direct Direct Indirect     Direct Indirect
GB0000394469 N/A       N/A            N/A    N/A     3,894,261   N/A      5.34%


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



Total (A+B)
Number of voting rights                  % of voting rights
3,894,261                                5.34%




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

BlackRock Investment Management (UK) Limited - 3,894,261 (5.34%)



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:
14. Contact name:
15. Contact telephone number:






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