Net Asset Value(s)

NET ASSET VALUE

BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC

The unaudited net asset values for BlackRock Commodities Income Investment
Trust plc at close of business on 15 October 2012 were:

119.34p Capital only
119.97p Including current year income XD

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 93,508,000 ordinary
shares in issue, there are no shares held in treasury. The Company issued
250,000 new ordinary shares on 11 October 2012. These are expected to be listed
on 16 October 2012 and the unaudited NAV will be calculated on a revised share
capital of 93,758,000 from this date.

4. 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).