Energy XXI Announces New AIM Trading Symbol and Depositary Interest

HOUSTON, May 30, 2007 (PRIME NEWSWIRE) -- Energy XXI (Bermuda) Limited today announced it has completed the process to have its unrestricted common shares admitted to trading on AIM, a market operated by the London Stock Exchange, under the ticker symbol EXXI, effective from June 6, 2007. Unlike its restricted shares, currently (LSE:EGY), which may only be purchased by certain types of investors, the unrestricted shares (LSE:EXXI) may be purchased by any interested party. The unrestricted shares will be admitted to the CREST electronic settlement system by means of a depositary interest facility.

Participation in CREST will enable the EXXI unrestricted common shares (CUSIP G10082108) (ISIN BMG100821088) to be traded and settled wholly electronically, without the need for share certificates. Settlement through CREST will commence on June 6, 2007, in accordance with Operational Bulletin No. 1311 issued by CREST on 29 May 2007. A letter is being sent to affected shareholders explaining the impact of this development. Unlike transfers of certificated common shares, transfers of the depositary interests will be subject to stamp duty reserve tax at the rate of 0.5%.

Concurrent with the addition of the new EXXI symbol, the company's original restricted common shares and warrants will begin trading under new symbols, and will remain ineligible for CREST settlement. The restricted common shares, which currently trade under the symbol EGY, will be traded under the ticker symbol EXXS. Energy XXI warrants, which currently trade under the symbol EGYW, will be traded under the ticker symbol EXXW. EXXS and EXXW continue to be restricted and only certain purchasers are qualified to acquire these securities.

The table below summarizes these changes.

 ---------------------------------------------------------------------
              Old ticker  New ticker   CUSIP            ISIN
 ---------------------------------------------------------------------
 Restricted
  Shares       EGY         EXXS        G100091013       BMG100091013
 ---------------------------------------------------------------------
 Restricted
  Warrants     EGYW        EXXW        G100091195       BMG100091195
 ---------------------------------------------------------------------
 Unrestricted
  Shares       --          EXXI        G10082108        BMG100821088
 ---------------------------------------------------------------------

Complete descriptions of settlement procedures for shareholders interested in selling or exchanging their shares are included in the investor section of the Energy XXI website, www.energyxxi.com, and are available from Collins Stewart Europe Limited and Jefferies International, Energy XXI listing brokers in the United Kingdom. In the United States, Jefferies & Company, BMO Capital Markets, Collins Stewart and Natexis Bleichroeder are market makers.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of such securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.