For filings with the FSA include the                                           
For filings with issuer exclude the                                            
TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                 
1. Identity of the issuer or the underlying     Reckitt Benckiser Group plc    
issuer 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                              Yes    
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                                                                  
3. Full name of person(s) subject to  Massachusetts Financial Services Company 
the notification obligation: iii                                                
4. Full name of shareholder(s) (if     MFS invests in securities of the issuer 
different from 3.):iv                 on behalf of its various mutual funds and 
                                       institutional account clients.       
5. Date of the transaction and date                10 January 2013             
on which the threshold is crossed or                                           
reached: v                                                                      
6. Date on which issuer notified:                  11 January 2013              
7. Threshold(s) that is/are crossed                      5%                    
or reached: vi, vii                                                             
8. Notified details:
A: Voting rights attached to shares viii, ix 
Class/type of  Situation previous             Resulting situation after          
shares          to the triggering                   the triggering               
                  transaction                       transaction                 
if possible     Number     Number    Number       Number of         % of voting  
using             of         of        of          voting            rights x    
the ISIN CODE   Shares     Voting    shares        rights                        


                                    Direct   Direct   Indirect   Direct  
                                            xi       xii                     
GB00B24CGK77  36,495,203 36,495,203                   35,880,924           
B: Qualifying Financial Instruments                                              
Resulting situation after the triggering transaction                             
Type of financial  Expiration     Exercise/       Number of voting    % of 

    instrument     date xiii  Conversion Period  rights that may be     rights  
                                        xiv           acquired if the              
                                                       instrument is               
    C: Financial Instruments with similar economic effect to Qualifying Financial   

Instruments xv, xvi                                                             

Resulting situation after the triggering transaction                            

Type of financ Exercise Expiration Exercise/  Number of voting    % of voting   
     ial        price   date xvii  Conversion rights instrument  rights xix, xx 

  instrument                         period       refers to                     
                                                                Nominal   Delta 

Total (A+B+C)                                                                  
        Number of voting rights               Percentage of voting rights      
              35,880,924                                 4.99%                 

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

Reckitt Benckiser plc - B24CGK7                                                 
Holdings as of 10 January 2013                                                  
Entity Voting Rights Held Percentage Held                                       
MFS Investment Management (LUX) S.A. (LUX) 2,120,940 0.2949%                    
MFS McLean Budden (MB) 602,445 0.0838%                                          
MFS Investment Management (MFS) 12,493,528 1.7371%                              
MFS Heritage Trust Company (MFSHE) 715,587 0.0995%                              
MFS Institutional Advisors, Inc. (MFSI) 9,845,005 1.3688%                       
MFS International Ltd. (MIL) 940,079 0.1307%                                    
MFS International (U.K.) Ltd. (MILUK) 6,119,335 0.8508%                         
MFS Investment Management K.K. (MIMKK) 3,044,005 0.4232%                        
Notifiable Interest 35,880,924 4.9889%                                          
Voting Rights Outstanding 719,219,114                                           
Proxy Voting:                                                                   
10. Name of the proxy holder:                             n/a                   
11. Number of voting rights proxy                         n/a                  
holder will cease to hold:                                                      
12. Date on which proxy holder will                       n/a                  
cease to hold voting rights:                                                    
13. Additional information:                                                     
14. Contact name:                                                               
15. Contact telephone number:                                                   
Note: Annex should only be submitted to the FSA not the issuer                  
Annex: Notification of major interests in sharesxxii                            
A: Identity of the persons or legal entity subject to the notification
Full name                                                                      
(including legal form of legal                                                 
Contact address                                                                
(registered office for legal entities)                                          
Phone number & email                                                            
Other useful information                                                       
(at least legal representative for                                             
legal persons)                                                                  
B: Identity of the notifier, if applicable 
Full name                                                                       
Contact address                                                                 
Phone number & email                                                            
Other useful information(e.g.                                                  
functional relationship with the person                                        
or legal entity subject to the                                                 
notification obligation)                                                        
C: Additional information                                                       
For notes on how to complete form TR-1 please see the FSA website. 
-0- Jan/14/2013 09:35 GMT
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