Notification of Shareholding

Embargoed for release: 0700 on 28 December 2012 Northern Petroleum Plc ("Northern" or "the Company") Notification of Shareholding TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are Northern Petroleum Plc attached:ii 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights

Yes

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the Damille Investments II notification obligation:iii Limited Singer Nominees Limited (on behalf of 4. Full name of shareholder(s) Damille Investments II (if different from 3.):iv Limited) and Pershing Nominees Limited (on behalf of Damille Investments II Limited) 5. Date of the transaction and date on which the threshold is crossed or 21 December 2012 reached: v 6. Date on which issuer notified: 27

December 2012

7. Threshold(s) that is/are crossed or 5% reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation after the triggering transaction of to the triggering shares transaction Number Number Number Number of voting % of voting rights if possible of of of rights x using Shares Voting shares the ISIN Rights CODE Direct Direct xi Indirect xii Direct Indirect 4,562,683 4,562,683 N/A N/A 5,312,683 N/A 5.57% GB00B0D47T64 B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting % of voting financial date xiii Conversion Period xiv rights that may be rights instrument acquired if the instrument is exercised/ converted. N/A N/A N/A N/A N/A C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi Resulting situation after the triggering transaction Type of Exercise price Expiration Exercise/ Number of voting rights % of voting financial date xvii Conversion instrument refers to rights xix, xx instrument period xviii Nominal Delta N/A N/A N/A N/A N/A N/A N/A Total (A+B+C) Number of voting rights Percentage of voting rights 5,312,683 5.57%

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

Damille Investments II Limited holds 2,562,683 shares through Pershing Nominees Limited and 2,750,000 shares through Singer Nominees Limited.

Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease N/A to hold: 12. Date on which proxy holder will cease to hold N/A voting rights: 13. Additional information: N/A 14. Contact name: Anson Fund Managers Limited 15. Contact telephone number: 01481 722 260 ---ENDS---

For further information please contact:

Westhouse Securities (NOMAD and Broker) Tel: +44 (0) 20 7601 6100

Richard Baty / Petre Norton - Corporate Finance

Ian Napier- Corporate Broking

Notes to Editors:

Northern is a full cycle oil and gas company currently holding over 40 licences

in a number of low risk areas and is continuing with its strategy of adding and

securing value for shareholders as it engages with projects at all stages of

the E&P value chain.

Comprehensive information on Northern and its oil and gas operations, including

all press releases, annual reports and interim reports are available from

Northern's website: www.northpet.com