Holding(s) in Company

RNS Number:3529D
Tecteon PLC
05 September 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:



Tecteon Plc



2. Reason for the notification (place an X inside the appropriate bracket/s)

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): (   )

issued share capital change


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

Barclays PLC


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



Barclays Stockbrokers Ltd



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



03 September 2007



6. Date on which issuer notified:



04 September 2007



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



13%



8. Notified details:

.................



A: Voting rights attached to shares


Class/type of shares if possible              Situation previous to the Triggering transaction
using the ISIN CODE
                                  Number of shares                   Number of voting Rights

 GB0000530716                      29,022,445                        29,022,445



Resulting situation after the triggering transaction


Class/type of shares if     Number of shares         Number of voting rights      % of voting rights
possible using the ISIN
CODE                                                 Direct       Indirect        Direct          Indirect

 GB0000530716                29,466,889                            29,466,889                      13.05%



B: Financial Instruments

Resulting situation after the triggering transaction


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

 N/A



Total (A+B)
Number of voting rights        % of voting rights

 29,466,889                     13.05%



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



Barclays Stockbrokers Ltd



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:

N/A



14. Contact name:



Geoff Smith



15. Contact telephone number:



020 7116 2913


                      This information is provided by RNS
            The company news service from the London Stock Exchange
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