EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Northwest Biotherapeutics, Inc. ("the
Company") on Form 10-K for the period ending December 31, 2002, as filed with
the Securities and Exchange Commission on the date hereof ("the Report"), I,
Daniel O. Wilds, President and Chief Executive Officer of the Company, certify,
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that:

         (1) The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

         (2) The information contained in the Report fairly presents, in all
material respects the financial condition and results of operations of the
Company.


                                     /s/ Daniel O. Wilds
                                     ---------------------------
                                     Daniel O. Wilds
                                     President and Chief Executive Officer
                                    (Principal Executive Officer)
                                     March  20, 2003