Net Asset Value(s)

INVESCO Asset Management Limited                        

HEADLINE: Net Asset Values

It is announced that at the close of business on 5 December 2007 the unaudited
net asset values per share (AIC basis) of the following investment trust
companies managed by INVESCO Asset Management Limited are:-

                                            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   1324.14       -   1331.63       -
- see Note 3                                                                   
                               Debt at Fair   1290.02           1297.52        
                                      Value                                    
                                                                               
All the above NAVs have been calculated using the fair value (bid) prices for
the underlying investments.

Note:

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