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               12 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        8,264,142   5.86%           184,487    0.13%
securities
(2) Derivatives     1,081,136   0.77%           704,606    0.50%
(other than
options)
(3) Options and             0    0.00%               0     0.00%
agreements to
purchase/sell

Total               9,345,278    6.62%           889,093   0.63%


(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      9,541                11.6112
Purchase      43                   11.6080
Purchase      343                  11.5660
Purchase      127                  11.5580
Purchase      20                   11.5980
Purchase      1,250                11.6080
Purchase      5,079                11.5711
Purchase      2,781                11.6234
Purchase      39,073               11.6434
Purchase      1,826                11.6334
Purchase      2,781                11.6234
Sale          463                  11.6015
Sale          121                  11.6315
Sale          1,000                11.5630
Sale          377                  11.5605
Sale          120                  11.6115
Sale          1,202                11.5857
Sale          537                  11.5515
Sale          450                  11.7015
Sale          250                  11.5630
Sale          4,751                11.5857
Sale          245                  11.5615
Sale          1,825                11.6115
Sale          477                  11.5675
Sale          3,060                11.5857
Sale          3,961                11.6005
Sale          1,632                11.5857
Sale          36,300               11.6005
Sale          5,007                11.7378
Sale          5,079                11.5711
Sale          2,781                11.6234
Sale          584                  11.6890
Sale          618                  11.6545
Sale          45,126               11.5857
Sale          900                  11.5630
Sale          24,100               11.6005
Sale          5,216                11.5857
Sale          5,079                11.5711
Sale          1,205                11.5705
Sale          62                   11.5715
Sale          1,699                11.5857
Sale          2,573                11.5857

(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         14445                 11.5711
CFD        Short         9541                  11.6111
CFD        Short         2781                  11.6233
CFD        Short         1826                  11.6334
CFD        Short         39073                 11.6434
CFD        Long          5079                  11.571
CFD        Long          3961                  11.6005
CFD        Long          584                   11.6889
CFD        Long          5007                  11.7377

(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                         15 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