Transaction in Own Shares

TRANSACTION IN OWN SHARES

BlackRock Commodities Income Investment Trust plc

The Company announces that 500,000 Ordinary shares of 1p each were today sold
by the Company from the shares held in Treasury at a price of 134.5p per share
which represented a premium to net asset value.

The resultant total number of Ordinary shares now held in Treasury by the Company
is 274,338. The number of Ordinary shares that the Company has in issue, less
the total number of Ordinary shares held by the Company in Treasury following
this sale, is 75,325,662.

Contact name for queries:

Kerry Higgins - BlackRock Investment Management (UK) Limited

13 January 2010

Tel: [phone]