Holding(s) in Company

Sound Oil PLC 09 November 2007 TR-1 NOTIFICATION OF MAJOR INTERESTS IN SHARES (1) Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: Sound Oil plc (2) Reason for the notification (please state 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 the notification obligation: Credit Suisse Securities (Europe) Limited (4) Full name of shareholder(s) (if different from (3)): (5) Date of the transaction and date on which the threshold is crossed or reached (if different): 6 November 2007 (6) Date on which issuer notified: 8 November 2007 (7) Threshold that is crossed or reached: 10%, 9% (8) Notified details: A: Voting rights attached to shares +-------------+---------------------+-----------------------------------------------+ |Class/type of|Situation previous to| | | |the | | +-------------+---------------------+-----------------------------------------------+ |Shares |Triggering | Resulting situation after the triggering | | |transaction | transaction | +-------------+----------+----------+----------+-------------------+----------------+ | | |Number of | | | | +-------------+----------+----------+----------+-------------------+----------------+ |using the |Number of |Voting |Number of |Number of Voting | | +-------------+----------+----------+----------+-------------------+----------------+ |ISIN code |Shares |Rights |Shares |Rights |% of voting | | | | | | |rights | +-------------+----------+----------+----------+----------+--------+-------+--------+ | | | |Direct |Direct |Indirect|Direct |Indirect| +-------------+----------+----------+----------+----------+--------+-------+--------+ |ORDINARY |69,344,356|69,344,356|57,380,697|57,360,697|N/A |8.28% |N/A | |SHARES | | | | | | | | | | | | | | | | | |GB00B09VL556 | | | | | | | | +-------------+----------+----------+----------+----------+--------+-------+--------+ B: Financial instruments +---------------------------------------------------------------------------------+ |Resulting situation after the triggering transaction | +-------------------+-------------+---------------+---------------+---------------+ |Type of Financial |Expiration |Exercise / |Number of |% of voting | +-------------------+-------------+---------------+---------------+---------------+ |Instrument |Date |Conversion |voting rights |rights | +-------------------+-------------+---------------+---------------+---------------+ | | |Period / |that may be | | +-------------------+-------------+---------------+---------------+---------------+ | | |Date |acquired (if | | +-------------------+-------------+---------------+---------------+---------------+ | | | |the instrument | | +-------------------+-------------+---------------+---------------+---------------+ | | | |is exercised / | | +-------------------+-------------+---------------+---------------+---------------+ | | | |converted) | | +-------------------+-------------+---------------+---------------+---------------+ |N/A | | | | | +-------------------+-------------+---------------+---------------+---------------+ | | | | | | +-------------------+-------------+---------------+---------------+---------------+ Total (A+B) +-----------------------------------+--------------------------------------------+ |Number of voting rights |% of voting rights | +-----------------------------------+--------------------------------------------+ |57,360,697 |8.28% | +-----------------------------------+--------------------------------------------+ | | | +-----------------------------------+--------------------------------------------+ (9) Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: Credit Suisse Securities (Europe) Limited is a part of the Investment Banking division of Credit Suisse ("CSIBD"), which is part of the Credit Suisse Group ("CSG"). CSIBD is a segregated business unit within CSG with an independent management structure and exercises its voting rights independently from other divisions of CSG. Proxy Voting: (10) Name of the proxy holder: N/A (11) Number of voting rights proxy holder will cease/acquire to hold: N/A (12) Date on which proxy holder will cease/acquire to holding voting rights: N/A (13) Additional information: (14) Contact name: Glenda Burford (15) Contact number: 020 7888 3599 This information is provided by RNS The company news service from the London Stock Exchange FVLTLAIID

Companies

Sound Energy (SOU)
UK 100