Holding(s) in Company

Sterling Energy PLC
09 May 2008


Form TR-1 with annex. FSA Version 2.1 updated April 2007

+----------------------------------------+
|For filings with the FSA include the    |
|annex                                   |
|                                        |
|For filings with issuer exclude the     |
|annex                                   |
+----------------------------------------+

+-----------------------------------------------------------------------------+
|TR-1: Notifications of Major Interests in Shares                             |
+-----------------------------------------------------------------------------+

+-----------------------------------------------+-------------------------------+
|1. Identity of the issuer or the underlying    |Sterling Energy plc            |
|issuer of existing shares to which voting      |                               |
|rights are attached:                           |                               |
+-----------------------------------------------+-------------------------------+
|2. Reason for notification (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                                                        |          |
+--------------------------------------------------------------------+----------+
|An event changing the breakdown of voting rights                    |          |
+--------------------------------------------------------------------+----------+
|Other (please specify):______________                               |          |
+---------------------------------------+----------------------------+----------+
|3. Full name of person(s) subject to   |Mr Denis O'Brien                       |
|notification obligation:               |                                       |
+---------------------------------------+---------------------------------------+
|4. Full name of shareholder(s) (if     |Baycliffe Limited (as nominee)         |
|different from 3):                     |                                       |
+---------------------------------------+---------------------------------------+

|5. Date of transaction (and date on    |01 May 2008                            |
|which the threshold is crossed or      |                                       |
|reached if different):                 |                                       |
+---------------------------------------+---------------------------------------+
|6. Date on which issuer notified:      |08 May 2008                            |
+---------------------------------------+---------------------------------------+
|7. Threshold(s) that is/are crossed or |12%                                    |
|reached:                               |                                       |
+---------------------------------------+-------+--------------------+----------+
+--------------------------------------------------------------------------------------+
|8: Notified Details                                                                   |
+--------------------------------------------------------------------------------------+
|A: Voting rights attached to shares                                                   |
+------------+-----------------------+-------------------------------------------------+
|Class/type  |Situation previous to  |Resulting situation after the triggering         |
|of shares   |the triggering         |transaction                                      |
|            |transaction            |                                                 |
|If possible +-----------+-----------+-----------+--------------------+----------------+
|use ISIN    |Number of  |Number of  |Number of  |Number of voting    |Percentage of   |
|code        |shares     |voting     |shares     |rights              |voting rights   |
|            |           |rights     |           +-----------+--------+-------+--------+
|            |           |           |           |           |        |       |        |
|            |           |           |           |           |        |       |        |
|            |           |           |           |Direct     |Indirect|Direct |Indirect|
+------------+-----------+-----------+-----------+-----------+--------+-------+--------+
|GB0005299929|167,186,005|167,186,005|202,186,005|202,186,005|N/A     |12.26% |N/A     |
+------------+-----------+-----------+-----------+-----------+--------+-------+--------+

+--------------------------------------------------------------------------------+
|B: Financial Instruments                                                        |
|                                                                                |
|                                                                                |
+--------------------------------------------------------------------------------+
|Resulting situation after the triggering transaction                            |
|                                                                                |
|                                                                                |
+---------------+---------------+---------------+----------------+---------------+
|Type of        |Expiration date|Exercise/      |No. of voting   |Percentage of  |
|financial      |               |conversion     |rights that may |voting rights  |
|instrument     |               |period/date    |be acquired (if |               |
|               |               |               |the instrument  |               |
|               |               |               |exercised/      |               |
|               |               |               |converted)      |               |
+---------------+---------------+---------------+----------------+---------------+
|               |               |               |                |               |
|               |               |               |                |               |
|               |               |               |                |               |
+---------------+---------------+---------------+----------------+---------------+

+-----------------------------------------------------------------------------+
|Total (A+B)                                                                  |
|                                                                             |
|                                                                             |
+--------------------------------------+--------------------------------------+
|Number of voting rights               |Percentage of voting rights           |
+--------------------------------------+--------------------------------------+
|202,186,005                           |12.26%                                |
+--------------------------------------+--------------------------------------+

+-----------------------------------------------------------------------------+
|9. Chain of controlled undertakings through which the voting rights and /or  |
|the financial instruments are effectively held, if applicable:               |
+-----------------------------------------------------------------------------+
|Denis O'Brien holds 32,241,134 shares in his name                            |
|                                                                             |
|Baycliffe Limited holds 169,944,871 as nominee                               |
+-----------------------------------------------------------------------------+

+-----------------------------------------------------------------------------+
|Proxy Voting:                                                                |
|                                                                             |
|                                                                             |
+--------------------------------------+--------------------------------------+
|10. Name of 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:                      |Christopher Tushingham                | 
|15. Contact telephone name:           |01624 646 846                         |
|                                      |                                      |
+--------------------------------------+--------------------------------------+


For notes on how to complete form TR-1 please see the FSA website.



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