Net Asset Value(s)

Invesco Asset Management Limited                        

HEADLINE: Net Asset Values

It is announced that at the close of business on 18-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    1136.86               1148.83              
Trust plc               Par                                                 
                                                                            
                      Debt at    1117.87               1129.84              
                        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.

21 June 2010