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 30 November 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 4,637,376 3.29% 248,168 0.18% securities (2) Derivatives 2,504,148 1.77% 2,392,617 1.70% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to purchase/sell Total 7,141,524 5.06% 2,640,785 1.87% (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 1,200 11.4769 Purchase 500 12.4300 Purchase 797 12.4600 Purchase 619 12.1341 Purchase 32 11.5292 Purchase 79 12.4699 Purchase 1,050 11.5500 Purchase 15,769 12.2385 Purchase 17,044 12.1850 Purchase 13,244 11.9649 Purchase 387 11.2821 Purchase 1,200 11.4769 Purchase 619 12.1341 Purchase 500 12.4900 Purchase 2,257 12.4900 Purchase 1,080 12.1793 Sale 1,148 12.4200 Sale 700 12.4500 Sale 300 12.4200 Sale 250 12.4500 Sale 99 11.4908 Sale 1,000 12.4200 Sale 150 12.3500 Sale 719 12.4300 Sale 100 12.4301 Sale 253 12.4500 Sale 100 12.4101 Sale 691 12.4100 Sale 200 12.4200 Sale 190 12.4400 Sale 120 12.4500 Sale 221 12.4500 Sale 344 11.5900 Sale 75 12.4601 Sale 9,801 12.4500 Sale 461 12.4200 Sale 500 12.4100 Sale 450 12.4000 Sale 613 12.4500 Sale 3,844 12.4500 Sale 600 12.3000 Sale 253 12.4500 Sale 89 12.4401 Sale 12,000 12.4600 Sale 503 12.3800 Sale 1,250 12.3700 Sale 400 12.4100 Sale 500 12.3600 Sale 188 12.3800 Sale 1,000 12.3200 Sale 1,012 12.4100 Sale 1,500 12.4400 Sale 149 12.4200 Sale 130 12.4100 Sale 800 12.4700 Sale 3,929 12.4100 Sale 200 12.4400 Sale 82 12.4502 Sale 139 12.4100 Sale 1,350 12.4500 Sale 184 12.2600 Sale 150 11.3080 Sale 405 12.3682 Sale 17,514 12.4900 Sale 1,200 11.4769 Sale 520 11.4300 Sale 7,067 12.4219 Sale 13,216 11.9411 Sale 400 12.4100 Sale 1,189 12.4200 Sale 12,000 12.4600 Sale 300 12.4500 Sale 767 12.4200 Sale 1,700 12.4100 Sale 2,000 12.4600 Sale 70 12.4601 Sale 619 12.1341 Sale 959 12.4500 Sale 3,000 12.3400 Sale 425 12.4200 Sale 917 12.4100 Sale 2,000 11.5700 Sale 1,000 12.3300 Sale 123 12.4600 Sale 500 12.4500 Sale 1,081 12.4100 Sale 560 12.4100 Sale 209 12.4500 Sale 2,095 12.4100 NB: The below transactions which were previously disclosed have been cancelled Deal Date Purchase/Sale Number of Securities Price per unit (GBP) 29/11/2007 Sale 1,057 11.0552 29/11/2007 Purchase 1,057 11.0552 29/11/2007 Purchase 1,057 11.0552 (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 387 11.2821 CFD Short 1200 11.4769 CFD Short 28754 11.8443 CFD Short 13244 11.9649 CFD Short 2659 12.1047 CFD Short 619 12.1341 CFD Short 1080 12.1793 CFD Short 17044 12.1849 CFD Short 15769 12.2385 CFD Long 520 11.43 CFD Long 29837 11.836 CFD Long 13216 11.9411 CFD Long 405 12.3681 CFD Long 7067 12.4219 NB: The below transactions which were previously disclosed have been cancelled Deal Date Long/Short Number of Securities Price per unit (GBP) 29/11/2007 Short 1,057 11.0552 (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 03 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

Companies

Barclays (BARC)
UK 100

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