Net Asset Value(s)

Invesco Asset Management Limited                        

HEADLINE: Net Asset Values

It is announced that at the close of business on 27 April 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     1287.13                  1311.89              
Investment                                                                   
Trust plc                                                                    
                                                                             
              Debt at Fair     1269.53                  1294.29              
                  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.

28 April 2011

Invesco Asset Management Ltd

020 7065 4000