Endeavour Continues Successful Appraisal Drilling in Cygnus Field

HOUSTON - Endeavour International Corporation (NYSE-Alt: END) (LSE: ENDV) today announced that the Cygnus 44/12a-4 appraisal well in the Southern Gas Basin in the North Sea has further extended the productive area of the Cygnus field by confirming the presence of recoverable gas reserves in a third fault block. Endeavour holds a 12.5 percent interest in the Cygnus field area spread over two United Kingdom blocks, 44/11a and 12a. License partners include GDF SUEZ, the operator, and Venture Production plc.

Endeavour Announces Sale of Norwegian Subsidiary

HOUSTON - Endeavour International Corporation (NYSE-Alt: END) (LSE: ENDV) today announced that it has signed a definitive agreement to divest its Norwegian subsidiary, Endeavour Energy Norge AS (”EEN”), to Verbundnetz Gas AG (”VNG”) for cash consideration of USD $150 million. The transaction is subject to certain government approvals and regulatory compliance processes that are expected to be completed within 60 days.

IDENTEC SOLUTIONS Acquires Leading Tunnel Safety Company

LUSTENAU, Austria and KRISTIANSAND, Norway - IDENTEC SOLUTIONS Further Reinforces its Stronghold on the Tunnel,
Oil, Gas and Mining Industry With the Recent Acquisition of the Privately
Held Tunnelcom

Endeavour to Present at Wall Street Analyst Conference

HOUSTON - Endeavour International Corporation (NYSE-Alt: END) (LSE: ENDV) will
participate in the 20th Annual Wall Street Analyst Conference hosted by The
Wall Street Analyst Forum on March 26, 2009 to be held at The University Club
in New York.

Announcing the International Ibsen Scholarships 2009

SKIEN, Norway - The International Ibsen Scholarships were initiated in 2007 by the
Norwegian government.

Endeavour Announces Record Financial and Operational Results for 2008

HOUSTON - Endeavour International Corporation (NYSE-Alt: END) (LSE: ENDV) today
reported net income to common stockholders for 2008 increased to US$45.7
million or US$0.32 per diluted share as compared to a loss of US$60.3 million
or US$0.49 per diluted share in 2007. Revenues in 2008 increased more than 47
percent to US$260.4 million from US$176.1 million in 2007. The company
reported adjusted earnings before interest, taxes, depreciation and
amortization (EBITDA) of US$176.5 million from US$124.1 million in 2007.
Discretionary cash flow for the year was US$120.8 million.