Net Asset Value(s)

HEADLINE: Net Asset Values

It is announced that at the close of business on 11-Jun-10, 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 Investment Debt at     1118.44                   1129.90              
Trust plc             Par                                                      
                                                                               
                    Debt at     1099.45                   1110.91              
                      Fair                                                     
                     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.