Net Asset Value(s)

Invesco Asset Management Limited                        

HEADLINE: Net Asset Values

It is announced that at the close of business on 26 May 2011 the unaudited net
asset values per share (AIC basis) of the following investment trust companies
managed by Invesco Asset Management Limited are:-

Company                           NAVs with Debt at Par & Fair              
                                              Value                         
                                                                            
                                 Undiluted   Diluted   Undiluted   Diluted  
                                                                            
                                  Capital    Capital  Cum Income  Cum Income
                                                                            
                                  (pence)    (pence)    (pence)    (pence)  
                                                                            
                                                                            
Keystone           Debt at Par    1296.87               1325.55             
Investment Trust                                                            
plc                                                                         
                                                                            
                   Debt at Fair   1277.76               1306.45             
                      Value                                                 
                                                                            
                      Note 2                                                
                                                                            


The above NAVs have been calculated using the fair value prices for the
underlying investments.

Notes:


2 The NAV above includes a provision for performance fee, where applicable.

27 May 2011

Invesco Asset Management Ltd

020 7065 4000