Holding(s) in Company

Plexus Holdings Plc
12 March 2007


TR-1(i):   NOTIFICATION OF MAJOR INTERESTS IN SHARES 

1. Identity of the issuer or the underlying issuer of existing
shares to which voting rights are attached(ii):                            Plexus Holdings Plc
                                                                           
2. Reason for the notification     (please tick the appropriate box or boxes)

An acquisition or disposal of voting rights

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): Recalculation due to implementation of DTR 5            X

3. Full name of person(s) subject to the notification obligation
(iii):                                                             Morgan Stanley Securities Limited

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

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

6. Date on which issuer notified:

7. Threshold(s) that is/are crossed or reached:                    4%

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

GB00B0MDF233        3,400,000   3,400,000  3,400,000    3,400,000                 4.24%


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

3,400,000                                          4.24%


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

N/A


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:                          Please note that there has been no change in Morgan
                                                     Stanley's disclosable interest since the previous
                                                     disclosure.  This disclosure has been restated due to
                                                     the implementation of the Transparancy Directive.


14. Contact name:                                    Martha Bruce

15. Contact telephone number:                        01372 465330



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