Holding(s) in Company

Borders & Southern Petroleum plc
24 April 2008


For release 24 April 2008


                        Borders & Southern Petroleum plc


                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:

Borders & Southern Petroleum plc

2. Reason for the notification:

An acquisition or disposal of voting rights:

3. Full name of person(s) subject to the notification obligation:

Morgan Stanley (Institutional Securities Group and Global Wealth Management)

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

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

15/04/08

6. Date on which issuer notified:

17/04/08

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

3%

8. Notified details:

.................


A: Voting rights attached to shares

Class/type of shares if possible      Situation previous to the
using the ISIN CODE                    Triggering transaction
                                     Number of     Number of voting
                                     shares        Rights

Ordinary Shares                      Below 3%      Below 3%
GB00B08F4599


Resulting situation after the triggering transaction

Class/type of     Number of   Number of voting rights % of voting rights
shares if         shares
possible using
the ISIN CODE
                  Direct      Direct         Indirect Direct    Indirect

Ordinary Shares   5,836,850   5,836,850               3.00%
GB00B08F4599



B: Financial Instruments

Resulting situation after the triggering transaction

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


Total (A+B)
Number of voting       % of voting
rights                 rights

5,836,850              3.00%

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

Morgan Stanley Securities Limited 5,836,850...3.00%

Proxy Voting:

10. Name of the proxy holder:

N/A


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

N/A

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

N/A

13. Additional information:


14. Contact name:

Julia Holden

15. Contact telephone number:

020 7677 5468



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