Net Asset Value(s)

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 9 February 2009 was:

89.16p Capital only (undiluted)

89.95p Including current year income (undiluted)

89.16p Capital only (diluted NAV incorporating treasury shares)

89.95p 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 72,310,662 excluding
shares held in Treasury.

4. Following the implementation of the Tender Offer on 5 September 2007 and the
resale of 1.2 million shares on 5 March 2008 and 500,000 shares on both 30
October 2008 and 4 November 2008 and 250,000 on both 8 January 2009 and 21
January 2009, 3,289,338 shares are now 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).