Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                                     
                                                                                                    
1. Identity of the issuer or the underlying issuer      Elementis Plc                               
of existing shares to which voting rights are                                                       
attached: ii                                                                                        
                                                                                                    
2 Reason for the notification (please tick the appropriate box or boxes):                           
                                                                                                    
An acquisition or disposal of voting rights                                                   X     
                                                                                                    
An acquisition or disposal of qualifying 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                                                                    
                                                                                                    
An event changing the breakdown of voting rights                                                    
                                                                                                    
Other (please                                                                                       
specify):                                                                                           
                                                                                                    
3. Full name of person(s) subject to the        APG Asset Management N.V.                           
notification obligation: iii                                                                        
                                                                                                    
4. Full name of shareholder(s)                                                                      
 (if different from 3.):iv                                                                          
                                                                                                    
5. Date of the transaction and date on          22 May 2015                                         
which the threshold is crossed or                                                                   
reached: v                                                                                          
                                                                                                    
6. Date on which issuer notified:               26 May 2015                                         
                                                                                                    
7. Threshold(s) that is/are crossed or          5%                                                  
reached: vi, vii                                                                                    
                                                                                                    

   

8. Notified details:                                                                                 
                                                                                                     
A: Voting rights attached to shares viii, ix                                                         
                                                                                                     
Class/type of    Situation previous        Resulting situation after the triggering transaction      
shares           to the triggering                                                                   
                 transaction                                                                         
if possible                                                                                          
using            Number       Number       Number      Number of voting      % of  voting rights x   
the ISIN CODE    of           of           of shares   rights                                        
                 Shares       Voting                                                                 
                              Rights       Direct      Direct xi   Indirect  Direct       Indirect   
                                                                   xii                               
                                                                                                     
                 22,805,720   22,805,720   23,136,223  23,136,223            5.01%                   
                                                                                                     
GB0002418548                                                                                         
                                                                                                     
B: Qualifying Financial Instruments                                                                  
                                                                                                     
Resulting situation after the triggering transaction                                                 
                                                                                                     
Type of financial       Expiration Exercise/               Number of voting        % of voting       
instrument              date xiii  Conversion Period xiv   rights that may be      rights            
                                                           acquired if the                           
                                                           instrument is                             
                                                           exercised/ converted.                     
                                                                                                     
N/A                     N/A        N/A                     N/A                     N/A               
                                                                                                     
C: Financial Instruments with similar economic effect to Qualifying Financial                        
Instruments xv, xvi                                                                                  
                                                                                                     
Resulting situation after the triggering transaction                                                 
                                                                                                     
Type of financial  Exercise   Expiration Exercise/     Number of voting rights  % of voting rights   
instrument         price      date xvii  Conversion    instrument refers to     xix, xx              
                                         period xviii                                                
                                                                                                     
N/A                N/A        N/A        N/A           N/A                      Nominal      Delta   
                                                                                                     
                                                                                N/A          N/A     
                                                                                                     
Total (A+B+C)                                                                                        
                                                                                                     
Number of voting rights                          Percentage of voting rights                         
                                                                                                     
23,136,223                                       5.01%                                               
                                                                                                     

   

9. Chain of controlled undertakings through which the voting rights and/or the              
financial instruments are effectively held, if applicable: xxi                              
                                                                                            
                                                                                            
N/A                                                                                         
                                                                                            
Proxy Voting:                                                                               
                                                                                            
10. Name of the proxy holder:                             APG Asset Management N.V.         
                                                                                            
11. Number of voting rights proxy holder will cease       N/A                               
to hold:                                                                                    
                                                                                            
12. Date on which proxy holder will cease to hold         N/A                               
voting rights:                                                                              
                                                                                            
                                                                                            
13. Additional information:                  We wish to inform you that APG Algemene        
                                             Pensioen Groep N.V. ("APG") has decided to     
                                             split-off the asset management activities. The 
                                             entity that performs the asset management      
                                             activities is called APG Asset Management N.V. 
                                             ("APG AM"). The separation has been effected by
                                             means of a split-off in accordance with the    
                                             provisions of Dutch law which implied that all 
                                             asset management activities shall transfer by  
                                             operation of law to APG AM. Contact person(s)  
                                             and contact details remain unchanged. This     
                                             notification is made on behalf of APG AM.      
                                                                                            
14. Contact name:                            Mr. Martijn Snoek                              
                                                                                            
15. Contact telephone number:                [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 7408 9300
26 May 2015