Holding(s) in Company

Form TR-1 with annex. FSA Version 2.1 updated April 2007

For filings with the FSA include the annex  
For filings with issuer exclude the annex   

TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying                   Severn Trent Plc
                                                                              
issuer of existing shares to which voting                                     
rights                                                                        
                                                                              
are attached:                                                                 
                                                                              
2. Reason for notification (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    INVESCO Limited                       
                                                                              
notification obligation:                                                      
                                                                              
4. Full name of shareholder(s) (if                                            
different                                                                     
                                                                              
from 3):                                                                      
                                                                              
5. Date of transaction (and date on     19 June 2008                          
which the                                                                     
                                                                              
threshold is crossed or reached if                                            
different):                                                                   
                                                                              
6. Date on which issuer notified:       20 June 2008                          
                                                                              
7. Threshold(s) that is/are crossed or  5%, 4%                                
                                                                              
reached:                                                                      

8: Notified Details                                                             
                                                                                
A: Voting rights attached to shares                                             
                                                                                
Class/type of Situation previous to Resulting situation after the triggering    
                                    transaction                                 
shares        the triggering                                                    
                                                                                
If possible   transaction                                                       
use ISIN                                                                        
              Number of  Number of  Number     Number of voting  Percentage of  
code                                                                            
              shares     voting     of shares  rights            voting rights  
                                                                                
                         rights                Direct Indirect   Direct Indirect
                                                                                
Ordinary      13,205,340 13,205,340 10,429,192        10,429,192        4.42%   
97.89p                                                                          
                                                                                
Shares                                                                          
                                                                                
(GBOOBI                                                                         
FH8J72)                                                                         

B: Financial Instruments                                                      
                                                                              
Resulting situation after the triggering transaction                          
                                                                              
Type of            Expiration Exercise/    No. of voting       Percentage of  
                         date              rights                             
financial                     conversion                       voting rights  
                                           that may be                        
instrument                    period/date  acquired                           
                                                                              
                                           (if the instrument                 
                                                                              
                                           exercised/                         
                                           converted)                         
                                                                              

Total (A+B)                                                                   
                                                                              
Number of voting rights                 Percentage of voting rights           
                                                                              
10,429,192                              4.42%                                 

9. Chain of controlled undertakings through which the voting rights and /or   
the financial instruments are effectively held, if applicable:                
                                                                              
Bank of Ireland (Dublin) - 84,645                                             
                                                                              
Bank of New York - 10,669                                                     
                                                                              
Bank of New York (Brussels) - 8,781                                           
                                                                              
Citibank (Hong Kong) - 25,709                                                 
                                                                              
JP Morgan Chase - 75,134                                                      
                                                                              
Citibank - 8,091,813                                                          
                                                                              
EKK EG Kassel - 472                                                           
                                                                              
HSBC Bank plc (London) - 231,213                                              
                                                                              
Mellon Bank Pittsburgh - 89,168                                               
                                                                              
State Street Trust & Banking (London) - 1,435,783                             
                                                                              
Trust & Custody Services - 856                                                
                                                                              
Northern Trust Company (London) - 149,270                                     
                                                                              
Other - 225,678                                                               
                                                                              
Proxy Voting:                                                                 
                                                                              
10. Name of proxy holder:                                                     
                                                                              
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:

14. Contact name:                Kerry Porritt

15. Contact telephone number:    0121 722 4730