Holding(s) in Company

TR-1: Notification of Major Interests in Shares                              

1. Identity of the       Rolls-Royce Group Plc                    
issuer or the underlying                                          
issuer of existing                                                
shares to which voting                                            
rights are attached                                               
                                                                  
2. Reason for the notification (please tick the                   
appropriate box or boxes)                                         
                                                                  
An acquisition or disposal of voting                              
rights                                                            
                                                                  
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): Revised due to                            
DTR rules - see Section 13                                        
                                                                  
3. Full name of person          FMR Corp                          
(s) subject to the                                                
notification obligation                                           
                                                                  
4. Full name of                                    See attached   
shareholder(s) (if                                   schedule     
different from 3.)                                                
                                                                  
5. Date of the            Revised due to DTR                      
transaction (and date            rules                            
on which the threshold                                            
is crossed or reached                                             
if different)                                                     
                                                                  
6. Date on which issuer                            22 March 2007  
notified                                                          
                                                                  
7. Threshold(s) that is                                 N/A       
/are crossed or                                                   
reached:                                                          
                                                                  

8: Notified Details                                                            
                                                                               
A: Voting rights attached to shares                                            
                                                                               
Class/type of  Situation previous to Resulting situation after the triggering  
shares         the Triggering        transaction                               
               transaction                                                     
If possible                                                                    
using the ISIN Number of  Number of  Number  Number of Voting  % of Voting     
CODE           Shares     Voting     of      Rights            Rights          
                          Rights     Shares                                    
                                                                               
                                     Direct  Direct Indirect   Direct  Indirect
                                                                               
     ISIN      60,696,020 60,696,020                60,696,020          3.36%  
                                                                               
 GB0032836487                                                                  

B. Financial Instruments                                                       
                                                                               
Resulting situation after the triggering transaction                           
                                                                               
Type of         Expiration    Exercise/         Number of Voting  % of Voting  
Financial       Date          Conversion Period Rights that may   Rights       
Instrument                    /Date             be acquired if                 
                                                the instrument is              
                                                exercised/                     
                                                converted                      
                                                                               

Total (A+B)                                                                    
                                                                               
Number of Voting Rights                 % of Voting Rights                     
                                                                               
              60,696,020                                 3.36%                 

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

Proxy Voting:                                                                
                                                                             
10. Name of the proxy holder:                               FMR Corp         
                                                                             
11. Number of voting rights proxy holder will cease            N/A           
/acquire to hold:                                                            
                                                                             
12. Date on which proxy holder will cease/acquire              N/A           
to hold voting rights:                                                       

13. Additional information:    As discussed with the FSA, prior to the       
                               implementation of the EU Transparency         
                               Directive, we aggregated the interests in     
                               shares of FMR Corp (FMR) and Fidelity         
                               International Limited (FIL) together for the  
                               purposes of shareholder reporting. According  
                               to the new DTR rules we are now reporting the 
                               indirect holdings of FMR and FIL separately. A
                               separate notification is being submitted for  
                               FIL. Please note these holdings are correct as
                               of close of business 20 March 2007            
                                                                             
14. Contact Name                              Laura Cotterell                
                                                                             
15. Contact:                      [e-mail]    

FMR                                                                            
                                                                               
Issuer name:         ROLLS-ROYCE GROUP PLC                                     
                                                                               
Current ownership    3.36%                                                     
percentage:                                                                    
                                                                               
Total shares held:   60,696,020                                                
                                                                               
Issued share         1,805,674,972                                             
capital:                                                                       
                                                                               
                      SHARES HELD            NOMINEE           MANAGEMENT      
                                                               COMPANY         
                                                                               
                                                                               
                                                                               
FMR Corp is the      3,593,701     STATE STREET BANK AND TR CO FMTC            
parent holding                                                                 
company of Fidelity                                                            
                                                                               
Management &         11,368,351    STATE STREET BANK AND TR CO FMRCO           
Research Company                                                               
(FMRCO), investment                                                            
                                                                               
manager for US       53,270        STATE STREET BANK AND TR CO FMR             
mutual funds, and                                                              
Fidelity Management                                                            
Trust                                                                          
                                                                               
Company (FMTC), a US 715,642       STATE STREET BANK AND TR CO FICL            
state chartered bank                                                           
which acts as                                                                  
                                                                               
a trustee or         83,665        ROYAL TRUST- TORONTO        FMTC            
investment manager                                                             
of various pension                                                             
and                                                                            
                                                                               
trust accounts.      38,900        NORTHERN TRUST LONDON       FMRCO           
                                                                               
                     2,281,294     NORTHERN TRUST CO           FMTC            
                                                                               
                     2,232,219     NORTHERN TRUST CO           FMRCO           
                                                                               
                     1,150,000     N/A                         0               
                                                                               
                     71,600        MELLON BANK NA              FMR             
                                                                               
                     384,733       MELLON BANK N.A.            FMTC            
                                                                               
                     768,254       MELLON BANK N.A.            FMRCO           
                                                                               
                     157,449       JPMORGAN CHASE BANK         FPM             
                                                                               
                     1,065,237     JPMORGAN CHASE BANK         FMTC            
                                                                               
                     30,075,160    JPMORGAN CHASE BANK         FMRCO           
                                                                               
                     5,822,543     BROWN BROTHERS HARRIMAN AND FMRCO           
                                   CO                                          
                                                                               
                     61,530        BANK OF NEW YORK            FMRCO           
                                                                               
                     772,472       BANK OF NEW YORK            FMTC