Holding(s) in Company

TR-1: notification of major interests in shares

1. Identity of the issuer or the underlying          Rolls-Royce Group plc     
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                            x   
                                                                               
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):___________________________________________             
                                                                               
3. Full name of person(s) subject to the         Aviva plc & its subsidiaries  
notification obligation:                                                       
                                                                               
4. Full name of shareholder(s) (if different                                   
from 3.):                                       Registered Holder:             
                                                                               
                                                BNY Norwich Union Nominees     
                                                Limited 11,654,677*            
                                                                               
                                                BT Globenet Nominees Limited   
                                                22,530*                        
                                                                               
                                                Chase GA Group Nominees Limited
                                                31,184,158*                    
                                                                               
                                                Chase Nominees Limited         
                                                2,302,727*                     
                                                                               
                                                CUIM Nominee Limited 8,285,201*
                                                                               
                                                Vidacos Nominees Limited 54,976
                                                *                              
                                                                               
                                                * denotes direct interest      
                                                                               
5. Date of the transaction (and date on which   15 April 2008                  
the threshold is crossed or reached if                                         
different):                                                                    
                                                                               
6. Date on which issuer notified:               17 April 2008                  
                                                                               
7. Threshold(s) that is/are crossed or reached: 3% to 2% Change at Direct      
                                                Interest level                 
                                                                               
8. Notified details:                                                           

A: Voting rights attached to shares                                          
                                                                             
Class/type  Situation       Resulting situation after the triggering         
of shares   previous to the transaction                                      
            Triggering                                                       
if possible transaction                                                      
using the                                                                    
ISIN CODE                                                                    
                                                                             
                                                                             

Number of    Number of  Number of  Number of voting      % of voting rights                
Shares       Voting     shares     rights ix                                               
             Rights                                                                        
             viii       Direct     Direct x   Indirect   Direct      Indirect              
                                              xi                                           
                                                                                           
                                                                                           
Ordinary                                                                                   
Shares                                                                                     
                                                                                           
             55,499,427 55,499,427 53,504,269 53,504,269 Not         2.94%      Not        
GB0032836487                                             disclosable            disclosable

B: Financial Instruments                                                       
                                                                               
Resulting situation after the triggering transaction xii                       
                                                                               
Type of         Expiration  Exercise/          Number of voting    % of voting 
financial       date xiii   Conversion Period/ rights that may be  rights      
instrument                  Date xiv           acquired if the                 
                                               instrument is                   
                                               exercised/                      
                                               converted.                      
                                                                               
                                      N/A                                      

Total (A+B)                                                                    
                                                                               
Number of voting rights                % of voting rights                      
                                                                               
53,504,269                             2.94%                                   

9. Chain of controlled undertakings through which the voting rights and/or the 
financial instruments are effectively held, if applicable xv:                  
                                                                               
                                 See Section 4                                 

Proxy Voting:                                                                  
                                                                               
10. Name of the proxy holder:                      See Section 4               
                                                                               
11. Number of voting rights proxy holder will                                  
cease to hold:                                                                 
                                                                               
12. Date on which proxy holder will cease to hold                              
voting rights:                                                                 

13. Additional information:       Figures are based on a total number of voting
                                  rights of 1,821,658,101.                     
                                                                               
14. Contact name:                 Neil Whittaker                               
                                                                               
15. Contact telephone number:     01603 684420                                 

Financial Services Authority