Holding(s) in Company

29 Aug 2007 08:50

For immediate release: 29 August 2007

Northern Petroleum Plc ("Northern" or "the Company") Notification of Shareholding

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:

Northern Petroleum Plc Ord 5p

2. Reason for the notification (please place an X inside the appropriate bracket/s):

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 notification obligation:

Harbert Fund Advisors, Inc., in its capacity as investment adviser to:

(i) Harbinger Capital Partners Master Fund I, Ltd. and

(ii) Harbinger Capital Partners Special Situations Fund, L.P.

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

Harbinger Capital Partners Master Fund I, Ltd.; and

Harbinger Capital Partners Special Situations Fund, L.P.

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

13% threshold crossed during trading on 23/08/07

6. Date on which issuer notified:

28/08/07

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

13%8. Notified details:¢â‚¬¦¢â‚¬¦¢â‚¬¦¢â‚¬¦¢â‚¬¦..

A: Voting rights attached to shares

Class/type of shares if Situation previous to the Triggering transaction possible using the ISIN CODE Number of shares Number of voting Rights GB00B0D47T64 9,400,000 9,400,000

Resulting situation after the triggering transaction

Class/type of Number of shares Number of voting rights % of voting rightsshares if possible using the ISIN CODE Direct Direct Indirect Direct Indirect GB00B0D47T64 9,025,000 0 9,025,000 0.00 12.80

B: Financial Instruments

Resulting situation after the triggering transaction

Type of Expiration Date Exercise/ Number of voting % of voting financial Conversion Period rights that may be rights instrument / Date acquired if the instrument is exercised/ converted. Total (A+B)Number of voting % of voting rights rights 12.80 9,025,000

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

Harbert Fund Advisors, Inc., serves as an investment adviser to:

i. Harbinger Capital Partners Master Fund I, Ltd. and

ii. Harbinger Capital Partners Special Situations Fund, L.P.

Harbert Fund Advisors, Inc. is an indirect, wholly owned subsidiary of Harbert Management Corporation

Proxy Voting:

10. Name of the proxy holder:

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

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

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13. Additional information:

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14. Contact name:

Chris Foss, Finance Director

15. Contact telephone number:

020 7743 6080

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