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               17 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        8,109,100   5.75%             66,283   0.05%
securities
(2) Derivatives     8,109,100   5.75%             66,283   0.05%
(other than
options)
(3) Options and             0   0.00%                 0    0.00%
agreements to
purchase/sell

Total               9,279,941   6.58%          1,025,937   0.73%


(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      82                   11.9160
Purchase      13,165               11.8046
Purchase      4,878                11.8368
Purchase      100                  11.8180
Purchase      4,878                11.8368
Purchase      100                  11.6945
Purchase      24,662               11.8300
Purchase      9,315                11.7646
Purchase      500                  11.8380
Sale          810                  Transfer
Sale          3,046                11.7980
Sale          132                  11.7030
Sale          248                  11.8415
Sale          4,878                11.8368
Sale          873                  11.7600
Sale          10,403               11.7980
Sale          13,165               11.8046
Sale          1,525                11.7980
Sale          7,679                11.7868
Sale          1,090                11.7980
Sale          1,455                11.7980
Sale          13,165               11.8046
Sale          1,667                11.7980
Sale          997                  11.7980
Sale          23,008               11.7980
Sale          9,305                11.7980
Sale          23,005               11.7715
Sale          2,949                11.7789

(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         9315                  11.7646
CFD        Short         31382                 11.8047
CFD        Short         24662                 11.8299
CFD        Short         4878                  11.8367
CFD        Long          23005                 11.7714
CFD        Long          2949                  11.7788
CFD        Long          7679                  11.7868
CFD        Long          13165                 11.8046

(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                         18 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