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               03 December 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        4,722,250   3.35%          141,808     0.10%
securities
(2) Derivatives     2,586,740   1.83%        2,581,569     1.83%
(other than
options)
(3) Options and             0   0.00%                0     0.00%
agreements to
purchase/sell

Total               7,308,990   5.18%        2,723,377     1.93%


(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      300                  12.3080
Purchase      80                   12.3488
Purchase      1,093                12.3320
Purchase      1,093                12.3320
Purchase      31,413               11.8664
Purchase      2,172                12.3300
Purchase      6,066                12.3400
Purchase      152,133              12.3524
Purchase      22,060               12.3333
Purchase      7,600                12.3345
Sale          293                  12.3808
Sale          1,797                12.3100
Sale          434                  12.3800
Sale          582                  12.3200
Sale          265                  12.4000
Sale          114                  12.3010
Sale          315                  12.3508
Sale          172                  12.3400
Sale          50                   12.3210
Sale          180                  12.4000
Sale          300                  12.3608
Sale          4,000                12.3800
Sale          737                  12.3100
Sale          50                   12.4003
Sale          1,929                12.3000
Sale          192                  12.3600
Sale          720                  12.3000
Sale          320                  12.4000
Sale          400                  12.3508
Sale          1,050                12.3100
Sale          200                  12.3108
Sale          90                   12.3010
Sale          1,072                12.3000
Sale          750                  12.4000
Sale          800                  12.3200
Sale          97                   12.4012
Sale          1,093                12.3320
Sale          54,196               12.3398
Sale          29,837               11.8361
Sale          3,036                12.3000
Sale          300                  12.3080
Sale          25,060               12.3297
Sale          300                  12.3080
Sale          356                  12.3700
Sale          375                  12.3100
Sale          147                  12.3810
Sale          48                   12.3604
Sale          171                  12.3300
Sale          100                  12.3410
Sale          700                  12.3000
Sale          850                  12.3800
Sale          200                  12.3900
Sale          324                  12.3008
Sale          743                  12.3300
Sale          75                   12.3810
Sale          2,391                12.4000
Sale          1,000                12.3100
Sale          125                  12.3600
Sale          500                  12.3008
Sale          300                  12.3008

(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         1093                  12.332
CFD        Short         22060                 12.3332
CFD        Short         7600                  12.3344
CFD        Short         6066                  12.34
CFD        Short         152133                12.3524
CFD        Long          3036                  12.3
CFD        Long          300                   12.308
CFD        Long          25060                 12.3297
CFD        Long          54196                 12.3398

(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                         04 December 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