Holding(s) in Company

Filtronic PLC
19 June 2007

TR-1



NOTIFICATION OF MAJOR INTERESTS IN SHARES



1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached.


Filtronic plc



2. Reason for the notification


An acquisition or disposal of voting rights                                     Yes
An acquisition or disposal of financial instruments which may result in the acquisition of
shares already issued to which voting rights are attached
An event changing the breakdown of voting rights
Other (please specify): _______________________





3. Full name of person(s) subject to the notification obligation:


Capital Group International, Inc.



4. Full name of shareholder(s) (if different from 3.):


N/A



5. Date of the transaction (and date on which the threshold is crossed or
reached if different):


13 June 2007



6. Date on which the issuer notified:


14 June 2007



7. Threshold(s) that is/are crossed or reached:


10%



8. Notified details:



A:  Voting rights attached to shares



Class/type of shares (if possible using the ISIN CODE)


Ordinary



Situation Previous to the Triggering transaction



Number of Shares


7,565,735



Number of voting rights


7,565,735



Resulting situation after the triggering transaction



Number of shares


Direct - N/A


Indirect - 7,384,435



Number of voting rights


Direct - N/A


Indirect - 7,384,435



% of voting rights


Direct - N/A


Indirect - 9.9356%



B: Financial Instruments



Resulting situation after the triggering transaction



Type of financial instrument


N/A



Expiration date


N/A



Exercise/Conversion Period/Date


N/A



Number of voting rights that may be acquired (if the instrument is exercised/
converted)


N/A



% of voting rights


N/A



Total (A+B)



Number of voting rights


7,384,435



% of voting rights


9.9356%



9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:



Proxy Voting:



10. Name of the proxy holder:


N/A



11. Number of voting rights proxy holder will cease to hold:


N/A



12. Date on which proxy holder will cease to hold voting rights:


N/A



13. Additional information:






14. Name of contact and telephone number for queries


Maura Moynihan  01274 415324



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


Maura Moynihan



Date of notification


19 June 2007








Filtronic plc
As of 13 June 2007        
                                                   Number of Percent of

                                             Shares                 Outstanding

Capital Group International,              7,384,435                   9.936%
Inc. ('CGII') holdings

Holding by CGII Management Companies and Funds:

____________________________________________________________________________________________________


•   Capital Guardian Trust Company        2,659,000                   3.578%

•   Capital International Limited         4,688,135                   6.308%
     •   Capital International Institutional 
         UK Smaller Companies Fund 

•   Capital International S.A.               37,300                   0.050%




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