Endeavour Completes the Sale of Cygnus

By Endeavour International Corporation, PRNE
Monday, October 18, 2010

HOUSTON, October 19, 2010 - Endeavour International Corporation (NYSE Amex: END) (LSE: ENDV) today
announced it has closed on the sale of its Cygnus asset to Bayerngas UK Ltd.,
the UK oil and gas subsidiary of Bayerngas Norge AS, for a cash consideration
of US$110 million.

Endeavour International Corporation is an oil and gas exploration and
production company focused on the acquisition, exploration and development of
energy reserves in the North Sea and the United States. For more information,
visit www.endeavourcorp.com.

Certain statements in this news release should be regarded as
"forward-looking" statements within the meaning of the securities laws. These
statements speak only as of the date made. Such statements are subject to
assumptions, risk and uncertainty. Actual results or events may vary
materially.

Endeavour - Investor Relations, Mike Kirksey, +44-(0)-207-451-2381, +1-713-307-8700, or Darcey Matthews, +1-713-307-8711; or Pelham Public Relations - UK Media, Philip Dennis, +44-(0)-207-743-6363, Henry Lerwill, +44-(0)-203-178-6242, both for Endeavour International Corporation

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