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
    
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:
   The Royal Bank of Scotland Group plc
    
4. Full name of shareholder(s) (if different from 3.):
   ABN AMRO Bank N.V.
    
5. Date of the transaction (and date on which the threshold is crossed or  reached if different):
   08/10/09
    
6. Date on which issuer notified:
   16/10/09
    
7. Threshold(s) that is/are crossed or reached:
   6%
     
8. Notified details:
   ……………..
    

A: Voting rights attached to shares

Resulting situation after the triggering transaction

B: Financial Instruments

Resulting situation after the triggering transaction

Total (A+B)

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable:
   The Royal Bank of Scotland Group plc
   RFS Holdings N.V.
   ABN AMRO Holding N.V.
   ABN AMRO Bank N.V.

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:
    Chris Foss, Finance Director
     
15. Contact telephone number:
    020 7469 2900