ADELPHI ENERGY LTD: Christopher Hodge acquired 6,054 ordinary fully paid shares at $0.21 per share in on market trade on February 24. Following this transaction, he now holds a total, direct and indirect, of 6,054 ordinary shares and 2,000,000 incentive options.

ALINTA LTD: Barclays Global Investors Australia Ltd became a substantial shareholder on March 1 with a voting power of 5.25%.

Anthony Howarth, Fiona Harris, Timothy Healey, Tina McMeckan, Robert Browning and Michael Wilkins acquired ordinary shares at $11.03 per share in on market purchase on March 2 pursuant to the deferred employee share plan. Howarth acquired 189 shares taking his total holding to 66,659 ordinary shares held directly and 1,216 ordinary shares held indirectly. Harris acquired 227 shares taking her total holding to 14,942 ordinary shares, directly held. Healey acquired 151 shares taking his total holding, direct, to 11,049 ordinary shares. McMeckan acquired 151 shares, taking her total holding to 14,291 ordinary shares, held directly. Browning acquired 148 shares, taking his total holding to 62,984 ordinary shares and 260,000 options, held directly. Wilkins acquired 151 ordinary shares taking his total holding to 287 ordinary shares held directly and 5,000 ordinary shares held indirectly.

ARC ENERGY LTD: Eric Streitberg acquired 20,000 fully paid ordinary shares at $1.55 per share in on market trade on March 6, taking his total holding, direct and indirect, to 7,720,001 fully paid shares and 1,500,000 employee options.

ARROW ENERGY NL: Renaissance Smaller Companies became a substantial shareholder on February 28, with a voting power of 5.10%.

AUSTRALIAN GAS LIGHT COMPANY: GJW Martin, who ceased to be a director on February 28, retains a direct interest in 587,902 ordinary shares and 149,381 rights under the long-term incentive plan.

BOW ENERGY LTD: Ron Prefontaine acquired 51,480 ordinary shares and 40,000 ordinary shares on March 7 and 8 taking his total holding, direct and indirect, to 4,878,613 ordinary shares and 428,566 options at $0.30 expiring March 31, 2008.

CALTEX AUSTRALIA LTD: Barclays Global Investors Australia Ltd ceased to be a substantial shareholder on March 3.

Richard Warburton and John Thorn acquired ordinary fully paid shares at $17.74 each on March 6 pursuant the non-executive director share plan. Warburton acquired 140 shares taking his total holding, direct, to 10,000 shares and 1,039 shares. Thorn acquired 47 shares taking his total holding, direct, to 346 shares.

CENTRAL PETROLEUM LTD: The company, which joined the official list of the ASX on March 6, advises of the following interests of its directors. William Dunmore holds a direct interest in 600,000 ordinary fully paid shares (subject to escrow until March 6, 2008) and 300,000 options exercisable at $0.20 by May 31, 2010 (subject to escrow until March 6, 2008). Henry Askin holds a direct interest in 800,000 ordinary fully paid shares (subject to escrow until March 6, 2008) and 400,000 options exercisable at $0.20 by May 31, 2010 (subject to escrow until March 6, 2008). . John Heugh holds a direct interest in 5,1000 001 ordinary fully paid shares (subject to escrow until March 6, 2008) and 2,500,000 options exercisable at $0.20 by May 31, 2010 (subject to escrow until March 6, 2008) while Richard Faull holds a direct interest in 1,000,001 ordinary fully paid shares (subject to escrow until March 6, 2008), 1,000,000 options exercisable at $0.20 by May 31 2010 (subject to escrow until March 6, 2008) and has an indirect interest in 400,000 ordinary fully paid shares.

ENTEK ENERGY LTD: Paul Garner acquired 61,491 ordinary shares at 10.5 cents per share in on market trade on March 6, taking his total holding, direct and indirect, to 1,380,000 ordinary shares and 4,000,000 options expiring December 31, 2008. In another on market transaction on March 7, Garner acquired 70,000 ordinary shares at 10 cents per share, taking his total holding, direct and indirect, to 1,450,000 ordinary shares and 4,000,000 options expiring December 31 2008. Garner acquired a further 50,000 shares in an on market transaction on March 9, taking his total holding, direct and indirect to 1,500,000 ordinary shares and 4,000,000 options expiring December 31. 2008.

HILLGROVE RESOURCES LTD: Commonwealth Bank of Australia became a substantial shareholder on March 3 with a voting power of 5.08%.

MAGELLAN PETROLEUM AUSTRALIA LTD: Magellan Petroleum Corporation has increased its substantial shareholding to 56.19% on March 8.

ORCHARD PETROLEUM LTD: Crosby Orchard Fund Inc increased its substantial shareholding to 9.49% on March 7.

ORIGIN ENERGY LTD: UBS Nominees Pty Ltd and its related bodies corporate increased their substantial shareholding to 11.17% on March 1.

TAP OIL LTD: Barclays Global Investors Australia Ltd decreased its substantial shareholding to 7.37% on March 3 while on March 7, MIR Investment Management Ltd ceased to be a substantial shareholder.

WOODSIDE PETROLEUM LTD: Charles Goode, Pierre Jean-Marie Jungels; Ashton Calvert and Jillian Broadbent acquired ordinary shares on market on March 1 via Link Market Services Limited, as trustee for the Non-Executive Directors’ Share Plan, Goode acquired 2,011 shares for $81,749.66, taking his total direct holding to 2,000 ordinary shares and his indirect holding to 216,372 ordinary shares. Jungels acquired 142 shares for $5,772.47 taking his total holding, indirect to 7,509 ordinary shares. Calvert acquired 235 ordinary shares for $9,553.04 taking his total holding, indirect to 497 ordinary shares while Broadbent acquired 246 ordinary shares for $10,000.21 taking her total direct holding to 20,000 ordinary shares and her indirect holding to 26,603 ordinary shares.