REG-BlackRock Com: Net Asset Value(s)

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Mon May 18, 2009 10:33am EDT 

NET ASSET VALUE

BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC

The unaudited net asset value for BlackRock Commodities Income Investment Trust
plc at close of business on 15 May 2009 was:

99.14p     Capital only (undiluted)                                            
                                                                               
100.13p    Including current year income (undiluted)                           
                                                                               
99.25p     Capital only (diluted NAV incorporating treasury shares)            
                                                                               
100.22p    Including current year income (diluted NAV incorporating treasury   
           shares)                                                             

Notes:

1. Investments have been valued on a bid price basis.

2. Revenue items included in net asset value, with dividends payable deducted
on the ex-dividend date.

3. The unaudited NAV above has been calculated based on 73,825,662 shares.

4. Following the resale of 250,000 shares out of treasury on 29 April 2009,
there are 1,774,338 shares held in treasury.

5. For the latest daily net asset value, previous month end performance
statistics, asset allocation and ten largest holdings of the BlackRock managed
Investment Trusts, see BLRKINDEX on Reuters or page 8800 on ICB (Topic 3).

END
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