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               18 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        7,761,332   5.50% 4            0,633   0.03%
securities
(2) Derivatives     1,200,085   0.85%          1,047,871   0.74%
(other than
options)
(3) Options and             0   0.00%                 0    0.00%
agreements to
purchase/sell

Total               8,961,417   6.35%          1,088,504   0.77%


(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      100                  11.7780
Purchase      537                  11.7819
Purchase      83                   11.8075
Purchase      20,000               11.7721
Purchase      11,452               11.7772
Purchase      537                  11.7819
Purchase      595                  11.7680
Purchase      164                  11.7680
Purchase      400                  11.7780
Purchase      500                  11.8724
Purchase      22,466               11.7862
Sale          230                  11.7640
Sale          12,676               11.7540
Sale          1,890                11.7694
Sale          2,712                11.7541
Sale          200,054              11.7540
Sale          50,824               11.7701
Sale          537                  11.7819
Sale          65                   11.7720
Sale          200                  11.7815
Sale          1,300                11.7715
Sale          50                   11.7615
Sale          593                  11.7640
Sale          3,188                11.7701
Sale          1,945                11.7701
Sale          15,045               11.7694
Sale          6,555                11.7793
Sale          6,603                11.7540
Sale          9,899                11.7614
Sale          2,985                11.7540
Sale          1,555                11.7694
Sale          13,103               11.7540
Sale          4,038                11.7540
Sale          3,356                11.7701
Sale          2,548                11.7694
Sale          1,494                11.7694
Sale          35,554               11.7694
Sale          7,829                11.7540
Sale          776                  11.7694
Sale          947                  11.7694
Sale          1,091                11.7694
Sale          12,790               11.7689
Sale          2,170                11.7500

(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         33762                 11.7671
CFD        Short         20000                 11.7721
CFD        Short         11452                 11.7772
CFD        Short         537                   11.7819
CFD        Short         22466                 11.7862
CFD        Long          9899                  11.7613
CFD        Long          12790                 11.7689
CFD        Long          6555                  11.7792

(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                         19 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