Holding(s) in Company

5th Dec 2007 12:04

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:

DEUTSCHE BANK AG

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

DEUTSCHE BANK AG

ABBEY LIFE ASSURANCE COMPANY LIMITED

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

30 NOVEMBER 2007

6. Date on which issuer notified:

4 DECEMBER 2007

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

3% 8. Notified details:¢â‚¬¦¢â‚¬¦¢â‚¬¦¢â‚¬¦¢â‚¬¦..

A: Voting rights attached to shares

Class/type of shares if possible Situation previous to the using the ISIN CODE Triggering transaction Number of Number of voting shares Rights GB00B07V4P80 Below 3% Below 3%

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 GB00B07V4P80 6,624,693 6,624,693 3.12 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 6,624,693 3.12

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

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:

+ 44 (0)20 7822 0000

COOKSON GROUP PLC

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Related Shares:

Vesuvius