FILTRONIC plc

                           CERTIFICATIONS EXHIBIT 12.1              EXHIBIT 12.1


I, J David Rhodes, certify that:

1.   I have reviewed this annual report on Form 20-F of Filtronic plc;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material  fact or omit to state a  material  fact  necessary  to make the
     statements made, in light of the circumstances  under which such statements
     were made,  not  misleading  with  respect  to the  period  covered by this
     report;

3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information  included  in  this  report,  fairly  present  in all  material
     respects the financial  condition,  results of operations and cash flows of
     the company as of, and for, the periods presented in this report;

4.   The  company's  other  certifying   officers  and  I  are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules l3a-15(e) and 15d-15(e)) for the company and have:

     a.   designed such disclosure  controls and procedures or caused such
          disclosure controls and  procedures to be designed  under our
          supervision, to ensure that  material   information   relating  to
          the company, including  its consolidated  subsidiaries,  is made known
          to us by  others  within  those entities, particularly  during the
          period in which  this  report is being prepared;

     b.   [omitted pursuant to the guidance of Release No. 33-8238 (June 5,
           2003)]

     c.   evaluated the effectiveness of the company's disclosure controls and
          procedures and presented in this report our conclusions about the
          effectiveness of the disclosure controls and procedures, as of the end
          of the period covered by this report based on such evaluation; and

     d.   disclosed in this report any change in the company's internal control
          over financial reporting that occurred during the period covered by
          the annual report that has materially affected, or is reasonably
          likely to materially affect, the company's internal control over
          financial reporting; and

5.   The company's other certifying officers and I have disclosed,  based on our
     most recent evaluation of internal control over financial reporting, to the
     company's  auditors  and the  audit  committee  of the  company's  board of
     directors (or persons performing the equivalent functions):

     a.   all significant deficiencies and material weaknesses in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the company's ability to record,
          process, summarise and report financial information; and

     b.   any fraud, whether or not material, that involves management or other
          employees who have a significant role in the company's internal
          control over financial reporting.

Date:     November 28, 2003

                                                    By:     /s/ J David Rhodes
                                                    --------------------------
                                                    Name:   J David Rhodes
                                                    Title:  Executive Chairman
                                                            and Chief Executive
                                                            Officer

<PAGE>


I, John Samuel, certify that:

1.   I have reviewed this annual report on Form 20-F of Filtronic plc;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material  fact or omit to state a  material  fact  necessary  to make the
     statements made, in light of the circumstances  under which such statements
     were made,  not  misleading  with  respect  to the  period  covered by this
     report;

3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information  included  in  this  report,  fairly  present  in all  material
     respects the financial  condition,  results of operations and cash flows of
     the company as of and for, the periods presented in this annual report;

4.   The  company's  other  certifying   officers  and  I  are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the company and have:

     a.   designed such disclosure  controls and procedures or caused such
          disclosure controls and  procedures to be designed  under our
          supervision,  to ensure that  material  information  relating  to  the
          registrant,  including its consolidated subsidiaries, is made
          known to us by others within those entities, particularly during the
          period in which  this  report is being prepared.

     b.   (omitted pursuant to the guidance of Release No. 33-8238 (June 5,
           2003))

     c.   evaluated the effectiveness of the company's disclosure controls and
          procedures and presented in this report our conclusions about the
          effectiveness of the disclosure controls and procedures, as of the end
          of the period covered by this report based on such evaluation; and

     d.   disclosed in this report any change in the company's internal control
          over financial reporting that occurred during the period covered by
          the annual report that has materially affected, or is reasonably
          likely to materially affect, the company's internal control over
          financial reporting; and

5.   The company's other certifying officers and I have disclosed,  based on our
     most recent evaluation of internal control over financial reporting, to the
     company's  auditors  and the  audit  committee  of the  company's  board of
     directors (or persons performing the equivalent functions):

     a.   all significant deficiencies and material weaknesses in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the company's ability to record,
          process, summarize and report financial information; and

     b.   any fraud, whether or not material, that involves management or other
          employees who have a significant role in the company's internal
          control over financial reporting.

Date:     November 28, 2003

                                                      By      /s/  John Samuel
                                                      ------------------------
                                                      Name:   John Samuel
                                                      Title:  Finance Director
                                                              and Chief
                                                              Financial Officer