Filtronic Regulatory News (FTC)

TR-1: Notifications 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 notification (yes/no)

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.

No

An event changing the breakdown of voting rights

No

Other (please specify): ______________

N/A

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

Aviva plc and its subsidiaries

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

Registered Holder:

BNY Norwich Union Nominees Limited - 509,986*

Chase GA Group Nominees Limited - 1,593,856*

Chase Nominees Limited - 185,996*

CUIM Nominee Limited - 442,897*

*denotes direct interest

Chase Nominees Limited - 70,760

Vidacos Nominees Limited - 1,118,616

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

12 August 2008

6. Date on which issuer notified:

13 August 2008

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

8. Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible

use ISIN

code

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Number of shares

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

Ordinary

GB0003362992

2,313,924

2,313,924

2,732,735

2,732,735

1,189,376

3.68%

1.60%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/

conversion period/date

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

N/A

N/A

N/A

N/A

N/A

Total (A+B)

Number of voting rights

Percentage of voting rights

3,922,111

5.28%

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

See section 4

Proxy Voting:

10. Name of proxy holder:

See section 4

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

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

13. Additional information:

Figures are based on a total number of voting rights of 74,323,093

14. Contact name:

Neil Whittaker

15. Contact telephone number:

01603 684420