Holding(s) in Company

TR-1: Notification of Major Interest 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

An event changing the breakdown of voting rights

Other (please specify):

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

ABERFORTH PARTNERS LLP

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

Nortrust Nominees Ltd

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

12/05/2017

6. Date on which issuer notified:

15/05/2017

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

10%

8. Notified details

A: Voting rights attached to shares

Class/type of sharesIf 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

OrdinaryGB0003362992

21,734,415

21,734,415

15,638,715

N/A

15,638,715

N/A

7.56%

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

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration Price

Expiration Date

Exercise/ conversion period/date

No of voting rights instrument refers to

Percentage of voting rights

N/A

N/A

N/A

N/A

N/A

N/A

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 15,638,715

7.56

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

Held by Aberforth Partners LLP

Proxy Voting:

10. Name of 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:

In addition, Aberforth Partners LLP is interested in a further 1,666,293 shares in the Company although Aberforth does not have access to the voting rights of these shares.

Aberforth Partners LLP is, therefore, interested in a total of 17,305,008 shares in the Company.

14. Contact name:

Pauline Robson, Aberforth Partners LLP

15. Contact telephone number:

0131 220 0733