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               11 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        8,358,078   5.92%          241,797     0.17%
securities
(2) Derivatives     1,066,505   0.76%           636,940    0.45%
(other than
options)
(3) Options and             0    0.00%               0     0.00%
agreements to
purchase/sell

Total               9,424,583    6.68%          878,737    0.62%


(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      36,965               11.8000
Purchase      6,000                11.5900
Purchase      500                  11.5580
Purchase      245                  11.5580
Purchase      86                   11.5580
Purchase      1,170                11.5937
Purchase      931                  11.5686
Purchase      2,404                11.8000
Purchase      4,040                11.5466
Purchase      17,126               11.5672
Purchase      931                  11.5686
Sale          131                  11.5615
Sale          758                  11.5618
Sale          1,000                11.5615
Sale          2,518                11.5800
Sale          416                  11.7615
Sale          233                  11.6915
Sale          131                  11.5530
Sale          931                  11.5686
Sale          36,965               11.8000
Sale          4,040                11.5466
Sale          298                  11.6115
Sale          100                  11.5615
Sale          848                  11.5615
Sale          678                  11.5515
Sale          107                  11.5615
Sale          148                  11.5530
Sale          512                  11.5815
Sale          200                  11.6015
Sale          893                  11.5618
Sale          15,687               11.5550
Sale          6,000                11.5575
Sale          5,470                11.6061
Sale          10,279               11.6057
Sale          2,404                11.8000
Sale          1,327                11.5678
Sale          3,582                11.6063
Sale          2,516                11.6065
Sale          2,085                11.5622
Sale          1,168                11.7239
Sale          6,523                11.6061
Sale          11,316               11.6057
Sale          3,441                11.6063
Sale          879                  11.5913
Sale          6,897                11.5500
Sale          97,514               11.6058
Sale          1,400                11.5500
Sale          7,419                11.5913
Sale          247                  11.5715
Sale          1,235                11.6500
Sale          4,040                11.5466
Sale          15,687               11.5550

(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         11608                 11.5466
CFD        Short         17126                 11.5672
CFD        Short         931                   11.5686
CFD        Short         1170                  11.5937
CFD        Long          4040                  11.5465
CFD        Long          1400                  11.55
CFD        Long          31374                 11.555
CFD        Long          6000                  11.5574
CFD        Long          2085                  11.5621
CFD        Long          1327                  11.5677
CFD        Long          1168                  11.7239

(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                         12 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