INTERSERVE PLC: Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                 
1. Identity of the issuer or the underlying           Interserve 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                               X     
                                                                           
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 specify):                                                          
          
3. Full name of person(s) subject to   JPMorgan Asset Management Holdings Inc. 
the notification obligation: iii                                                
                                                                           
4. Full name of shareholder(s) (if     JPMorgan Asset Management (UK) Limited  
different from 3.):iv                                                           
                                                                           
5. Date of the transaction and date                09 January 2013             
on which the threshold is crossed or                                           
reached: v                                                                      
                                                                           
6. Date on which issuer notified:                  10 January 2013              
                                                                           
7. Threshold(s) that is/are crossed    5% upwards - Voting rights attached to  
or reached: vi, vii                                    shares                   
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                         
                         Rights                                                 
                                                                                


                               Direct  Direct xi Indirect   Direct  
Indirect 
                                                    xii                      
                                                                             
GB0001528156  6,222,002 6,222,002                    6,367,639            5.02   
                                                                             
B: Qualifying Financial Instruments                                              
                                                                             
Resulting situation after the triggering transaction                             


                                                                                

Type of financial Expiration     Exercise/      Number of voting    % of voting 
    instrument     date xiii  Conversion Period rights that may be     rights    
                                    xiv          acquired if the                
                                                  instrument is                 
                                                   exercised/                   
                                                   converted.                   
                                                                                


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                     
                                     xviii                                      
                                                                                
                                                                Nominal   Delta 
                                                                                

 Contract for                                      124,555                0.10% 

  Difference                                                                    


Total (A+B+C)                                                                  
                                                                               
        Number of voting rights               Percentage of voting rights      
                                                                               
               6,492,194                                 5.12%                 

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


                                                                           
Total disclosable holding for JPMorgan Asset Management Holdings Inc: 6,492,194
(5.12%)                                                                         
                                                                           
JP Morgan Asset Management (UK) Limited 6,492,194 (5.12%)                       
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:                               N/A                   
                                                                           
14. Contact name:                                 Mr Trevor Bradbury            
                                                                           
15. Contact telephone number:                        0118 932 0123              
END 
-0- Jan/11/2013 11:21 GMT