Net Asset Value(s)

BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC

The unaudited net asset value for BlackRock Commodities Income Investment Trust
plc at close of business on 27 January 2011 was:

153.29p Capital only (undiluted)
153.63p Including current year income (undiluted)

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 90,508,000 shares.

4. Following the recent conversion of c shares into ordinary shares, there are
90,508,000 ordinary shares in issue. No shares are held in treasury. There are
no c shares in issue.

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).