REG-Misys: Holding(s) in Company <MSY.L>

Misys plc announces that on 29 November 2007 it received the notification set
out below from Aviva plc on behalf of Aviva plc and its subsidiaries pursuant
to DTR 5 of the FSA's Disclosure Rules and Transparency Rules. 
 
Andrea Gray
Assistant Company Secretary
Misys plc
Tel: 01386 872130
29.11.07
TR-1 (i) NOTIFICATION OF MAJOR INTERESTS IN SHARES
1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):
Misys plc
2. Reason for the notification                                        State    
                                                                     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                                                                       
                                                                               
An event changing the breakdown of voting rights                               
                                                                               
Other (please specify):                                                        
3. Full name of person(s) subject to the notification      AVIVA PLC & ITS     
obligation (iii):                                          SUBSIDIARIES        
                                                                               
4. Full name of shareholder(s) (if different from 3.)      BNY NORWICH UNION   
(iv):                                                      NOMINEES LIMITED    
                                                           5,621,141*          
                                                                               
                                                           BT GLOBENET NOMINEES
                                                           LIMITED 8,700*      
                                                                               
                                                           CHASE GA GROUP      
                                                           NOMINEES LIMITED    
                                                           13,277,139*         
                                                                               
                                                           CHASE NOMINEES      
                                                           LIMITED 930,086*    
                                                                               
                                                           CUIM NOMINEE LIMITED
                                                           3,443,016*          
                                                                               
                                                           * DENOTES DIRECT    
                                                           INTEREST            
                                                                               
                                                           CHASE NOMINEES      
                                                           LIMITED 663,401     
                                                                               
                                                           CUIM NOMINEE LIMITED
                                                           396,807             
                                                                               
                                                           VIDACOS NOMINEES    
                                                           LIMITED 675,174     
                                                                               
5. Date of the transaction (and date on which the          27 NOVEMBER 2007    
threshold is crossed                                                           
or reached if different) (v):                                                  
                                                                               
6. Date on which issuer notified:                          29 NOVEMBER 2007    
                                                                               
7. Threshold(s) that is/are crossed or reached:            6% TO 4% CHANGE AT  
                                                           COMBINED INTEREST   
                                                           LEVEL               
                                                                               
8. Notified details:                                                           
A: Voting rights attached to shares
Class/type of Situation previous to    Resulting situation after the triggering    
   shares        the Triggering                    transaction (vii)               
 if possible    transaction (vi)                                                   
  using the                                                                        
  ISIN CODE                                                                        
                                                                                   
                Number     Number     Number     Number of voting     % of voting  
                  of         of         of         rights (ix)          rights     
                Shares     Voting     shares                                       
                           Rights                                                  
                           (viii)                                                  
                                                                                   
                                      Direct     Direct   Indirect  Direct Indirect
                                                  (x)       (xi)                   
                                                                                   
GB0003857850  30,759,067 30,759,067 23,280,082 23,280,082 1,735,382 4.61%   0.35%  
                                                                                   
B: Financial Instruments
Resulting situation after the triggering transaction (xii)
   Type of     Expiration       Exercise/        Number of voting       % of   
  financial    date (xiii)      Conversion      rights that may be     voting  
 instrument                 Period/ Date (xiv)    acquired if the      rights  
                                                    instrument                 
                                                   is exercised/               
                                                     converted                 
                                                                               
N/A           N/A           N/A                N/A                   N/A       
Total (A+B)                                                                    
                                                                               
Number of voting rights                 % of voting rights                     
                                                                               
25,015,464                              4.96%                                  
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 504,661,670   
                                                                               
14. Contact name:                                             NEIL WHITTAKER   
                                                                               
15. Contact telephone number:                                 01603 684420     
END