Dividend Declaration

BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC

ANNOUNCEMENT OF QUARTERLY INTERIM DIVIDEND

21 June 2010

The Board of BlackRock Commodities Income Investment Trust plc is pleased to
announce that the second quarterly interim dividend in respect of the year to
30 November 2010 of 1.375p per ordinary share has been declared by the
Directors, payable on 23 July 2010 to holders of ordinary shares on the
register at the close of business on 2 July 2010 (ex dividend date is 30 June
2010).

Enquiries:

Kerry V Higgins
BlackRock Investment Management (UK) Limited, Secretary

Telephone: [phone]