Holding(s) in Company

Elementis PLC
17 May 2007



Elementis PLC

17 May 2007

Elementis plc ('the 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:

Elementis plc

2. Reason for the notification

An acquisition or disposal of voting rights

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

JPMorgan Chase & Co

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

J.P.Morgan International Bank Limited

J.P. Morgan Investment Management Inc.

JPMorgan Asset Management (UK) Limited

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

11 May 2007

6. Date on which issuer notified:

16 May 2007

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

5%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares if possible using the ISIN CODE

GB0002418548

Situation previous to the Resulting situation after the triggering transaction

Number of shares   26,060,356

Number of Voting Rights 26,060,356

Resulting situation after the triggering transaction

Number of shares          19,986,929

Number of voting rights   Direct

Number of voting rights   Indirect 19,986,929

% of voting rights        Direct

% of voting rights        Indirect 4.52%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period/ Date

Number of voting rights that may be acquired if the instrument is
exercised/ converted.

% of voting rights

Total (A+B)

Number of voting rights           19,986,929

% of voting rights                 4.52%

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

Total disclosable holding for JPMorgan Chase & Co : 19,986,929 (4.52%)

Holdings by controlled undertakings of JPMorgan Chase & Co. are as follows:

J.P.Morgan International Bank Limited
J.P. Morgan Investment Management Inc.
JPMorgan Asset Management (UK) Limited

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:

14. Contact name:                               Ricky Crump

15. Contact telephone number:                   020 7777 0424



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