Holding(s) in Company

Filtronic PLC
15 October 2003

                SECURITIES AND EXCHANGE COMMISSION



                     Washington, D.C. 20549



                     _ _ _ _ _ _ _ _ _ _ _ _



                            FORM 6-K



                REPORT of Foreign Private Issuer

            Pursuant to Rule 13a-16 or 15d-16 of the

                Securities Exchange Act of 1934



For the month of: October 2003



                          Filtronic plc

       (Exact name of registrant as specified in charter)



The Waterfront, Salts Mill Road, Saltaire, Shipley West Yorkshire

BD18 3TT, UK

           (Address of principal executive offices)



Indicate by check mark whether the registrant files or will

file annual reports under cover of Form 20-F or Form 40-F.



Form 20-F _ X _       Form 40-F _ _ _



Indicate by check mark whether the registrant by furnishing

the information contained in the Form is also thereby

furnishing the information to the Commission pursuant to

Rule 12g3-2(b) under the Securities Exchange Act of 1934



Yes _ _ _             No _ X _







SIGNATURE



Pursuant to the requirements of the Securities Exchange Act

of 1934, the registrant has duly caused this report to be

signed on its behalf by the undersigned, thereunto duly

authorised.



Filtronic plc



Date: October 15, 2003        By:  /s/ Maura Moynihan

                                   _ _ _ _ _ _ _ _ _ _

                          Name:    Maura Moynihan

                           Title:  General Counsel







                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES



1. Name of company


Filtronic plc



2. Name of shareholder having a major interest


Fidelity International Limited and certain of its

subsidiary companies, also

comprising the notifiable interest of Mr Edward C

Johnson 3rd, principal

shareholder of Fidelity International Limited



3. Please state whether notification indicates that it is in respect of

holding of the shareholder named in 2 above or in respect of a

non-beneficial interest or in the case of an individual holder if it is

a holding of that person's spouse or children under the age of 18


Non-beneficial interest



4. Name of the registered holder(s) and, if more than one holder, the

number of shares held by each of them


See attached schedule



5. Number of shares / amount of stock acquired


395,607



6. Percentage of issued class


0.531%



7. Number of shares / amount of stock disposed


N/a



8. Percentage of issued class


N/a



9. Class of security


Ordinary shares



10. Date of transaction


Notification was dated 14 October 2003



11. Date company informed


14 October 2003



12. Total holding following this notification


9,032,783



13. Total percentage holding of issued class following this notification


12.12%



14. Any additional information






15. Name of contact and telephone number for queries


Maura Moynihan [phone]



16. Name and signature of authorised company official responsible for

making this notification


Maura Moynihan



Date of notification


15 October 2003



The FSA does not give any express or implied warranty as to the accuracy

of this document or material and does not accept any liability for error or

omission. The FSA is not liable for any damages (including, without

limitation, damages for loss of business or loss of profits) arising in

contract, tort or otherwise from the use of or inability to use this

document, or any material contained in it, or from any action or decision

taken as a result of using this document or any such material.





                                 Filtronic plc

                     Schedule to Schedule 10 15.10.03 - FIL



Registered Holder            Shares Held



Chase Nominees Ltd            5,340,570

Chase Manhatten Bank London   25,663

Nortrust Nominees Ltd         594,880

Bankers Trust                 919,562

MSS Nominees Ltd              55,300

BT Globenet Nominees Ltd      147,650

RBS Trust Bank                399,560

Citibank                      66,850

Bank of New York London       510,451

Northern Trust                336,690

HSBC                          444,207

Deutche Bank                  47,600

Mellon Nominees Ltd           40,100

Bank of New York Brussels     103,700





TOTAL                         9,032,783




                      This information is provided by RNS
            The company news service from the London Stock Exchange