Net Asset Value(s)

Invesco Asset Management Limited                        

HEADLINE: Net Asset Values

It is announced that at the close of business on 21 May 2010, the unaudited net
asset values per share (AIC basis) of the following investment trust companies
managed by Invesco Asset Management Limited were:-

                                            NAVs with Debt at Par & Fair Value 
                                                                               
Company                                     Undiluted Diluted Undiluted Diluted
                                                                               
                                              Capital Capital       Cum     Cum
                                                                               
                                                                 Income  Income
                                                                               
                                              (pence) (pence)   (pence) (pence)
                                                                               
Keystone Investment Trust plc   Debt at Par   1071.86       -   1078.77       -
                                                                               
                               Debt at Fair   1053.14           1060.05        
                                      Value                                    
                                                                               
                                     Note 2                                    

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

Note:

2. The NAVs above include a provision for performance fee, where applicable.

24 May 2010