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 25 June 2012 were:

108.54p Capital only
110.27p Including current year income

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. Following the issue of 250,000 ordinary shares on 8 June 2012, the unaudited
NAV above has been calculated based on 93,258,000 ordinary shares in issue,
there are no shares held in treasury.