Endeavour International 10-K 2005 FY Annual report

EXHIBIT 23.3

                                                                                                                                Gaffney, Cline & Associates

CONSENT OF INDEPENDENT RESERVOIR ENGINEERS

We hereby consent to the inclusion in the Endeavour International Corporation Form 10-K for the year ended December 31, 2005, and the incorporation by reference in Registration Statement number No. 333-119577 of Endeavour International Corporation on Form S-8, number 333-118503 of Endeavour International Corporation on Form S-3, Registration Statement number No. 333-128692 of Endeavour International Corporation on Form S-8, number 333-130515 of Endeavour International Corporation on Form S-3 and number 333-124145 of Endeavour International Corporation on Form S-3, as amended of the reference to Gaffney, Cline & Associates Ltd.

Bentley, Hampshire, England
March 10th, 2006

Gaffney, Cline & Associates Ltd.

William B. Cline PE

Director

Company Name                                                                                                                                

[Job No]