Holding(s) in Company

Porvair PLC
19 December 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:

PORVAIR PLC


2. Reason for the notification (please state 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) :                                                   (NO )
 


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

F&C ASSET MANAGEMENT PLC
 

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

SEE BOX 9 BELOW
 

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

18/12/07
 

6. Date on which issuer notified:

19/12/07
 

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

11%
 

8. Notified details:


 


A: Voting rights attached to shares

 
Class/type of shares            Situation previous to  
if possible using the           the Triggering         
ISIN CODE                       transaction        
                       Number of shares       Number of voting Rights 
GB0006963689           4,653,142              4,653,142


 

                     Resulting situation after the triggering transaction 
 
Class/type of shares Number of shares  Number of voting rights    % of voting rights  
if possible using                                                                 
the ISIN CODE                                                                         
                     Direct            Direct     Indirect        Direct    Indirect  
                     4,458,142                    4,458,142                 10.95

 

B: Financial Instruments

Resulting situation after the triggering transaction 

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

 

Total (A+B)
Number of voting rights       % of voting rights 
4,458,142                     10.95


 

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

F&C ASSET MANAGEMENT PLC:
                                    NO. OF          % OF TOTAL      REGISTRATION NAME
CLIENT                              VOTING RIGHTS   VOTING RIGHTS
STEWARDSHIP INV FUNDS ICVC          
STEWARDSHIP GROWTH FUND             1,814,062       4.46            CHASE NOMINEES LIMITED
FPCP STEWARDSHIP                    2,363,528       5.81            HSBC GS NOMINEES LIMITED   
OTHER CLIENT HOLDS LESS THAN 3%
 


Proxy Voting:

 
10. Name of the proxy holder:

F&C ASSET MANAGEMENT PLC
 

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:

PETER FRASER
 

15. Contact telephone number:

0131 718 1051


 

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