Notification of Shareholding

5.09.07

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:
Northern Petroleum Plc Ord 5p
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): (   )
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.
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.
Date of the transaction (and date on which the threshold is crossed or reached if different):
12% threshold crossed during trading on 31/08/07
Date on which issuer notified:
04/09/07
Threshold(s) that is/are crossed or reached:
12%
Notified details:
……………..

Class/type of shares if possible using the ISIN CODE	Situation previous to the Triggering transaction
GB00B0D47T64	Number of shares 9,025,000	Number of voting Rights 9,025,000

Resulting situation after the triggering transaction

Class/type of shares if possible using the ISIN CODE	Number of shares	Number of voting rights		% of voting rights
GB00B0D47T64	Direct 8,300,000	Direct 0	Indirect 8,300,000	Direct 0.00	Indirect 11.77

Resulting situation after the triggering transaction

Type of financial instrument	Expiration Date	Exercise/ Conversion Period/ Date	Number of voting rights that may be acquired if the instrument is exercised/ converted.	% of voting rights

Total (A+B)

Number of voting rights 8,300,000	% of voting rights 11.77

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:
1. Harbinger Capital Partners Master Fund I, Ltd. and
2. Harbinger Capital Partners Special Situations Fund, L.P.
Harbert Fund Advisors, Inc. is an indirect, wholly owned subsidiary of Harbert Management Corporation

Northern Petroleum Plc