Holding(s) in Company

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:

COOKSON GROUP 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: (   )

 

An event changing the breakdown of voting rights: (   )

 

Other (please specify): (     )

 

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

Aviva plc & its subsidiaries

 

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

Registered Holders:

 

BNY Norwich Union Nominees Limited      1,943,672*

Chase GA Group Nominees Limited         8,692,890*

Chase Nominees Limited                    454,308*

CUIM Nominee Limited                    1,079,877*

Vidacos Nominees Limited                   64,329*

Chase Nominees Limited                  1,207,015

Vidacos Nominees Limited                  133,157

 

 * denotes direct interest

 

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

19 June 2009

 

6. Date on which issuer notified:

23 June 2009

 

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

5% to <5% change at Combined Interest Level

 

8. Notified details:

 

 

 

A: Voting rights attached to shares

 

Class/type of shares if possible        Situation previous to the     
using the ISIN CODE                       Triggering transaction      
                                                                      
                                    Number of shares Number of voting 
                                                     Rights           
                                                                      
                                                                      
Ordinary Shares                                                       
                                                                      
GBP 1.00                                                              
                                                                      
GB00B3WK5475                                                          
                                                                      
                                         14,979,209       14,979,209  
                                                                      
                                                                      
                                                                      

 

 

Resulting situation after the triggering transaction

 

Class/type of shares if possible     Number of   Number of voting     % of voting    
using the ISIN CODE                  shares      rights               rights         
                                                                                     
                                     Direct      Direct     Indirect  Direct Indirect
                                                                                     
                                                                                     
Ordinary Shares                                                                      
                                                                                     
GBP 1.00                                                                             
                                                                                     
GB00B3WK5475                                                                         
                                                                                     
                                     12,235,076  12,235,076 1,340,172 4.43   0.48    
                                                                                     

 

B: Financial Instruments

Resulting situation after the triggering transaction

 

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

 

 

Total (A+B)

Number of voting       % of voting      
rights                 rights           
                                        
                                        
13,575,248             4.91             
                                        

 

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

The voting rights are managed and controlled by Aviva Investors Global Services
Limited, with the following chain of controlled undertakings:

 

Aviva Investors Global Services Limited:

·        Aviva plc (parent company)

·        Aviva Group Holdings Limited (wholly owned subsidiary of Aviva plc)

·        Aviva Investors Holdings Limited (wholly owned subsidiary of Aviva
Group Holdings Limited)

·        Aviva Investors Global Services Limited (wholly owned subsidiary of
Aviva Investors Holdings Limited)

 

Proxy Voting:

 

10. Name of the proxy holder:

See Section 4

 

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:

 

14. Contact name:

RACHEL FELL, DEPUTY SECRETARY, COOKSON GROUP PLC

 

15. Contact telephone number:

020 7822 0000