Holding(s) in Company

20th May 2009 10:28

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: ( )

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): ( Yes, share consolidation of Ord 10p to Ord £1 )

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

Lloyds Banking Group plc

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

See Section 9

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

18 MAY 2009

6. Date on which issuer notified:

19 MAY 2009

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

Increase to above 6% 8. Notified details:……………..

A: Voting rights attached to shares

Class/type of shares Situation previous to the Triggering if possible using the transaction ISIN CODE Number of shares Number of voting Rights Ordinary Shares N/A GB00B3WK5475

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 Ordinary Shares 2,519,075 2,519,075 16,629,011 0.911 6.017 GB00B3WK5475 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. N/A Total (A+B)Number of voting % of voting rights rights 19,148,086 6.928%

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

13,686,123 shares (4.952%) are held by State Street Nominees Ltd. Shares are under the control of Scottish Widows Investment Partnership Ltd, a wholly owned subsidiary of Scottish Widows Group Ltd, a wholly owned subsidiary of Lloyds TSB Bank plc, a wholly owned subsidiary of Lloyds Banking Group plc (Indirect Interests).

5,259,634 shares (1.903%) are under the control of Insight Investment Management (Global) Limited, a wholly owned subsidiary of Insight Investment Management Limited, a wholly owned subsidiary of HBOS Insurance & Investment Group Limited, a wholly owned subsidiary of HBOS plc, a wholly owned subsidiary of Lloyds Banking Group plc (Indirect Interests).

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:

RACHEL FELL, DEPUTY SECRETARY, COOKSON GROUP PLC

15. Contact telephone number:

+ 44 (0) 20 7822 0000

vendor

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Related Shares:

Vesuvius