Rule 8.3 - BURREN ENERGY

FORM 8.3

    DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE
              (Rule 8.3 of the City Code on Takeovers and Mergers)


1.   KEY INFORMATION

Name of person dealing        BARCLAYS PLC
(Note 1)
Company dealt in              BURREN ENERGY
Class of relevant security    ORD GBP0.20
to which the dealings being
disclosed relate (Note 2)
Date of dealing               23 October 2007

2.   INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)  Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

                           Long                        Short

                     Number       (%)           Number       (%)

(1) Relevant        6,637,401   4.70%             21,441   0.02%
securities
(2) Derivatives     1,276,099   0.90%          1,246,844   0.88%
(other than
options)
(3) Options and             0   0.00%                 0    0.00%
agreements to
purchase/sell

Total               7,913,500   5.61%         1,268,285    0.90%


(b)  Interests and short positions in relevant securities of the company, other
     than the class dealt in (Note 3)

Class of                    Long                     Short
relevant
security:

                  Number             (%)    Number            (%)

(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
agreements to
purchase/sell

Total


(c)  Rights to subscribe (Note 3)

Class of relevant security:   Details



3.   DEALINGS (Note 4)

(a)  Purchases and sales

Purchase/sale Number of Securities Price per unit
                                   (GBP)
Purchase      1,079                11.7980
Purchase      6,770                11.7200
Purchase      9,927                11.8018
Purchase      1,000                11.8980
Purchase      59                   11.7920
Purchase      4,487                11.8859
Purchase      1,142                11.8520
Purchase      968                  11.7722
Purchase      23,504               11.8112
Purchase      1,000                11.7680
Purchase      16,890               11.7200
Purchase      1,000                11.8080
Purchase      2,951                11.8122
Purchase      127                  11.7920
Purchase      61,929               11.7200
Purchase      200                  11.9240
Purchase      245                  11.7960
Purchase      1,142                11.8520
Purchase      975                  11.7980
Purchase      420                  11.8080
Purchase      200                  11.7965
Sale          13,225               11.8100
Sale          3,836                11.8000
Sale          267,228              11.8100
Sale          2,440                11.7942
Sale          30,162               11.8000
Sale          1,042                11.7942
Sale          200                  11.7680
Sale          100                  11.7920
Sale          13,261               11.7952
Sale          111                  11.7920
Sale          921                  11.7920
Sale          2,000                11.8420
Sale          2,314                11.7920
Sale          100                  11.7680
Sale          200                  11.8180
Sale          85                   11.7680
Sale          903                  11.7952
Sale          4,291                11.7955
Sale          1,309                11.7952
Sale          1,695                11.7942
Sale          11,360               11.8100
Sale          1,667                11.8000
Sale          893                  11.7952
Sale          13,182               11.7942
Sale          12,623               11.8100
Sale          1,002                11.7942
Sale          53,812               11.8000
Sale          11,431               11.7801
Sale          1,142                11.8520
Sale          57,836               11.8100
Sale          2,433                11.8000
Sale          2,939                11.8000
Sale          2,907                11.7952
Sale          584                  11.8989
Sale          11,188               11.7952
Sale          2,512                11.7940
Sale          13,363               11.8100
Sale          2,116                11.8000
Sale          69,331               11.8100
Sale          2,337                11.8000
Sale          1,278                11.7942
Sale          31,348               11.8100
Sale          23,546               11.7942
Sale          2,426                11.7952

NB: The below transactions which were previously disclosed have been cancelled
Deal Date   Purchase/sale       Number of Securities Price per unit
19/10/07      Purchase              2,483               11.7357



(b)  Derivatives transactions (other than options)

Product    Long/Short    Number of Securities  Price Per
name,      (Note 6)      (Note 7)              Unit (GBP)
e.g. CFD
CFD        Short         968                   11.7722
CFD        Short         25775                 11.7881
CFD        Short         200                   11.7964
CFD        Short         9927                  11.8018
CFD        Short         23504                 11.8112
CFD        Short         2951                  11.8122
CFD        Short         1142                  11.8519
CFD        Short         4487                  11.8858
CFD        Long          11431                 11.78
CFD        Long          2512                  11.7939
CFD        Long          4291                  11.7954
CFD        Long          584                   11.8989

NB: The below transactions which were previously disclosed have been cancelled
Deal Date   Long/Short           Number of Securities Price per unit
19/10/07      Short              2,483               11.7357


(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Product name,   Writing,          Number of          Exercise  Type, e.g.      Expiry   Option money
e.g. call       selling,          securities to      price     American,       date     paid/received
option          purchasing,       which the option             European etc.            per unit (GBP)
                varying etc.      relates (GBP)

(ii) Exercising

Product name, e.g.  Number of           Exercise price per
call option         securities          unit (Note 5)




(d)  Other dealings (including new securities) (Note 4)


Nature of transaction Details           Price per unit
(Note 8)                                (if applicable)
                                        (Note 5)





4.   OTHER INFORMATION
None

Agreements, arrangements or understandings relating to options or derivatives


Full details of any agreement, arrangement or understanding between the
person disclosing and any other person relating to the voting rights of
any relevant securities under any option referred to on this form or
relating to the voting rights or future acquisition or disposal of any
relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.





Is a Supplemental Form 8 attached? (Note 9)                 NO


Date of disclosure                         24 October 2007
Contact name                               BARCLAYS COMPLIANCE
Telephone number                           020 7116 2913
If a connected EFM, name of
offeree/offeror with which connected
If a connected EFM, state nature of
connection (Note 10)


Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk