Holding(s) in Company

Filtronic PLC
16 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 16, 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

Prudential plc and certain of its subsidiary companies



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

N/a



6. Percentage of issued class

N/a


7. Number of shares / amount of stock disposed

N/a


8. Percentage of issued class

N/a


9. Class of security

Ordinary 10p shares


10. Date of transaction

16 October 2003


11. Date company informed

14 October 2003


12. Total holding following this notification

10,127,694


13. Total percentage holding of issued class following this
notification

13.59%


14. Any additional information



15. Name of contact and telephone number for queries

Maura Moynihan, 01274 231014


16. Name and signature of authorised company official responsible for making 
this notification

Maura Moynihan

Date of notification
16 October 2003


                     Filtronic plc
         Schedule to Schedule 10 - 16 October 2003

Registered holder             Shares held

Chase Noms Ltd                     20,887
Clydesdale Bk Noms Ltd MGA        683,146
Clydesdale Bk Noms Ltd MGG      2,545,000
Clydesdale Bk Noms Ltd MGIN       104,000
Clydesdale Bk Noms Ltd MGT         18,470
Clydesdale Bk Noms Ltd MGZ         34,839
Dexia Bank Intl                    68,906
Nortrust Noms Ltd                   2,000
Pruclt HSBC GIS Nom(UK) PAC AC  6,500,984
Pruclt HSBC GIS Nom(UK) PPL AC    132,117
PSIT2 US High Tech Fund            17,345


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