Holding(s) in Company

Zytronic PLC
20 March 2007


TR-1(i):               Notification of major interests in shares


1. Identity of the issuer or the underlying issuer of existing                          Zytronic plc
shares to which voting rights are attached(ii):


2. Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights                                                     X

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                       Singer & Friedlander Investment
obligation(iii):                                                                     Management Ltd


4. Full name of shareholder(s) (if different from 3.)(iv):                         Sinjul Nominees Ltd


5. Date of the transaction and date on which the threshold is         In accordance with DTR TP1(7) this
crossed or reached(v):                                              disclosure in elation to voting rights
                                                                             as at 20 January 2007


6. Date on which issuer notified:                                                      20/03/2007



7. Threshold(s) that is/are crossed or reached:                                           5%


8. Notified details:


A: Voting rights attached to shares

Class/type of    Situation previous to Resulting situation after the triggering transaction(vii)
shares           the Triggering
                 transaction (vi)

 if possible     Number of  Number of  Number of     Number of voting rights   % of voting rights
using the ISIN   Shares     Voting     shares        ix
CODE                        Rights
                            viii       Direct        Direct  x    Indirect xi  Direct       Indirect

Ordinary Shares  764,523    764,523    764,523                                              5.22%
GB0006971013


B: Financial Instruments

Resulting situation after the triggering transaction xii

Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting
instrument           xiii            Period/ Date xiv          that may be acquired if    rights
                                                               the instrument is
                                                               exercised/ converted.



Total (A+B)
Number of voting rights                            % of voting rights
764,523                                            5.22%


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





Proxy Voting:

10. Name of the proxy holder:

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:

14. Contact name:                            Denis Mullan

15. Contact telephone number:                0191 414 5511



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