Holding(s) in Company

TR-1: Notifications 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 notification (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			No
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments			No
An event changing the breakdown of voting rights			No
Other (please specify):			No
3. Full name of person(s) subject to notification obligation:	Ameriprise Financial, Inc. and its group
4. Full name of shareholder(s) (if different from 3):	HSBC Global Custody Nominee (UK) Limited Nortrust Nominees LTD State Street Nominees Limited Vidacos Nominees Ltd
5. Date of transaction and date on which the threshold is crossed or reached:	29 November 2016
6. Date on which issuer notified:	1 December 2016
7. Threshold(s) that is/are crossed or reached:	Above the threshold of 5%

8: Notified Details
A: Voting rights attached to shares
Class/type of shares If possible use ISIN code	Situation previous to the triggering transaction		Resulting situation after the triggering transaction
	Number of shares	Number of voting rights	Number of shares	Number of voting rights		Percentage of voting rights
			Direct	Direct	Indirect	Direct	Indirect
GB0002418548	22,776,706	22,776,706	152,072	152,072	23,115,108	0.033%	4.987%

B: Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date	Exercise/ conversion period	No. of voting rights that may be acquired if the instrument is exercised/converted.	Percentage of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Exercise Price	Expiration date	Exercise / conversion period	No. of voting rights instrument refers to	Percentage of voting rights
					Nominal	Delta

Total (A+B+C)
Number of voting rights	Percentage of voting rights
23,267,180	5.020%

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

Threadneedle Asset Management Limited (5.020%) Threadneedle Asset Management Limited is wholly owned by TC Financing Limited, which is itself wholly owned by Threadneedle Asset Management Holdings Limited, which is itself wholly owned by TAM UK Holdings Limited, which is itself wholly owned by Threadneedle Holdings Limited,  which is itself wholly owned by Threadneedle Asset Management Holdings SARL, which is itself wholly owned by Ameriprise International Holdings GmbH, which is itself wholly owned by Ameriprise Financial, Inc.

Proxy Voting:
10. Name of 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:	The Shares referred to in section 9 of this form are held in portfolios and funds managed on a discretionary basis by the entities set out in section 9. Please note that the Shares are held through certain nominee companies.
14 Contact name:	Mark Powney, Threadneedle Asset Management Ltd.
15. Contact telephone name:	[phone]

This notification is made in accordance with Rule 5.8.12 R(1) of the Disclosure and Transparency Rules sourcebook.

Wai Wong
Company Secretary
020 7067 2999

2 December 2016