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 acquisition or disposal of instruments with similar economic effect to
qualifying financial instruments: ( Yes )

 

An event changing the breakdown of voting rights: (   )

 

Other (please specify): (     )

 

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

    BlackRock, Inc

 

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

 

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

14 October 2010

 

6. Date on which issuer notified:

15 October 2010

 

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

Holding has gone above 5%

 

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           
                                                                      
GB00B3WK5475                             12,537,999       12,537,999  
                                                                      
                                                                      
                                                                      

 

 

Resulting situation after the triggering transaction

 

Class/type of shares if possible using Number of    Number of voting  % of voting    
the ISIN CODE                          shares       rights            rights         
                                                                                     
                                       Direct       Direct Indirect   Direct Indirect
                                                                                     
GB00B3WK5475                            N/A         N/A    12,568,604  N/A   4.55    
                                                                                     

 

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

 

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

 

C: Financial Instruments with similar economic effect to Qualifying Financial
Instruments

Resulting situation after the triggering transaction

 

Type of       Exercise Expiration Exercise/      Number of voting rights that may be    % of voting  
financial     price    Date       Conversion     acquired if the instrument is          rights       
instrument                        Period/ Date   exercised/ converted.                               
                                                                                                     
                                                                                        Nominal Delta
                                                                                                     
     CFD        N/A       N/A          N/A                     1,339,171                 0.48   0.48 
                                                                                                     

 

 

Total (A+B+C)

Number of voting       % of voting      
rights                 rights           
                                        
13,907,775             5.03             
                                        

 

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

 

BlackRock Investment Management (UK) Limited - 13,907,775 (5.03%)

 

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:

RACHEL FELL, DEPUTY SECRETARY, COOKSON GROUP PLC

 

15. Contact telephone number:

020 7822 0000