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               22 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        7,180,065   5.09%             43,373   0.03%
securities
(2) Derivatives     1,257,281   0.89%          1,177,890   0.83%
(other than
options)
(3) Options and             0   0.00%                 0    0.00%
agreements to
purchase/sell

Total               8,437,346   5.98%          1,221,263   0.87%


(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      13,843               11.7185
Purchase      14,034               11.7152
Purchase      254                  11.7780
Purchase      4,765                11.8033
Purchase      200                  11.7860
Purchase      42                   11.6840
Sale          100                  11.6720
Sale          1,161                11.6360
Sale          235                  11.7820
Sale          130                  11.6920
Sale          575                  11.8060
Sale          300                  11.6140
Sale          189,292              11.7738
Sale          4,288                11.7738
Sale          8,729                11.6710
Sale          7,013                11.7738
Sale          3,158                11.6461
Sale          7,430                11.7738
Sale          12,010               11.7738
Sale          4,118                11.7738
Sale          4,088                11.8904
Sale          12,384               11.7738
Sale          11,262               11.7658
Sale          4,535                11.7738
Sale          3,460                11.7580

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         14034                 11.7151
CFD        Short         13843                 11.7184
CFD        Short         34514                 11.7788
CFD        Short         4765                  11.8033
CFD        Long          3158                  11.6461
CFD        Long          8729                  11.6709
CFD        Long          3460                  11.758
CFD        Long          11262                 11.7657
CFD        Long          4088                  11.8903

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                         23 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