TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                                             
                                                                                                                
    1. Identity of the issuer or the underlying issuer                 Invesco Income Growth Trust plc          
    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 the                                                                    
    notification obligation: iii                                        Charles Stanley Group                   
                                                                                                                
    4. Full name of shareholder(s)                                                                              
     (if different from 3.):iv                                                                                  
                                                                      Charles Stanley & Co Ltd                  
                                                                         Rock (Nominees) Ltd                    
                                                                                                                
    5. Date of the transaction and date on                                 2 October 2015                       
    which the threshold is crossed or                                                                           
    reached: v                                                                                                  
                                                                                                                
    6. Date on which issuer notified:                                      5 October 2015                       
                                                                                                                
    7. Threshold(s) that is/are crossed or                                    Above 5%                          
    reached: vi, vii                                                                                            
                                                                                                                
    8. Notified details:                                                                                        
                                                                                                                
    A: Voting rights attached to shares viii, ix                                                                
                                                                                                                
    Class/type of   Situation previous         Resulting situation after the triggering transaction             
    shares          to the triggering                                                                           
                    transaction                                                                                 
    if possible                                                                                                 
    using           Number         Number      Number        Number of voting           % of voting rights x    
    the ISIN CODE   of             of          of shares     rights                                             
                    Shares         Voting                                                                       
                                   Rights      Direct        Direct xi         Indirect Direct      Indirect    
                                                                               xii                              
                                                                                                                
    Ordinary Shares   2,924,997     2,924,997    2,935,897       2,935,897                 5.01%                
                                                                                                                
    GB0003585725                                                                                                
                                                                                                                
    B: Qualifying Financial Instruments                                                                         
                                                                                                                
    Resulting situation after the triggering transaction                                                        
                                                                                                                
    Type of financial         Expiration Exercise/                      Number of voting          % of voting     
    instrument                         Conversion Period xiv          rights that may be        rights          
                              date                                    acquired if the                           
                              xiii                                    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 financial  Exercise    Expiration Exercise/         Number of voting rights        % of voting rights  
    instrument         price       date    Conversion period instrument refers to           xix, xx             
                                   xvii    xviii                                                                
                                                                                                                
                                                                                            Nominal     Delta   
                                                                                                                
    Total (A+B+C)                                                                                               
                                                                                                                
    Number of voting rights                              Percentage of voting rights                            
                                                                                                                
    2,935,897                                            5.01%                                                  
                                                                                                                

       

    9. Chain of controlled undertakings through which the voting rights and/or the              
    financial instruments are effectively held, if applicable: xxi                              
                                                                                                
                                                                                                
    Rock (Nominees) Limited                                                                     
    Charles Stanley & Co Ltd                                                                    
    Charles Stanley Group PLC is the holding company of the above                               
                                                                                                
    Proxy Voting:                                                                               
                                                                                                
    10. Name of the proxy holder:                                                               
                                                              N/A                               
                                                                                                
    11. Number of voting rights proxy holder will cease                                         
    to hold:                                                  N/A                               
                                                                                                
    12. Date on which proxy holder will cease to hold                                           
    voting rights:                                            N/A                               
                                                                                                
                                                                                                
    13. Additional information:                  N/A                                            
                                                                                                
    14. Contact name:                                                                           
                                                 Paul Griggs                                    
                                                 Invesco Asset Management Limited               
                                                                                                
    15. Contact telephone number:                                                               
                                                 0203 753 1517