BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC: Holding(s) in Company

BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC: Holding(s) in Company
NOTIFICATION OF MAJOR INTERESTS IN SHARES 
(1). Identity of the issuer or the underlying issuer of existing shares to
which voting rights are attached (ii): 
BlackRock Commodities Income Investment Trust plc 
(2). Reason for the notification (please tick the appropriate box or boxes): 
An acquisition or disposal of voting rights: (X) 
An acquisition or disposal of qualifying financial instruments which may result
in the acquisition of shares already issued to which voting rights are
attached: ( ) 
An acquisition or disposal of instruments with similar economic effect to
qualifying financial instruments: ( ) 
An event changing the breakdown of voting rights: ( ) 
Other (please specify) : ( ) 
(3). Full name of person(s) subject to the notification obligation (iii): 
BlackRock Investment Management (UK) Limited 
(4). Full name of shareholder(s) (if different from 3.) (iv): 
Nutraco Nominees Limited (on behalf of the Blackrock Savings Plan & ISA) 
(5). Date of the transaction (and date on which the threshold is crossed or
reached if different) (v): 
Not notified 
(6). Date on which issuer notified: 
Not notified 
(7). Threshold(s) that is/are crossed or reached: 
n/a 
(8). Notified details: 
A: Voting rights attached to shares (viii) (ix) 
Class/type of shares (if possible using the ISIN code): Ord £0.01 /
GB00B0N8MF98 
Situation previous to the triggering transaction(vi):
Number of Shares: 2,082,903
Number of Voting rights(viii): 2,082,903 (see additional information) 
Resulting situation after the triggering transaction(vii):
Number of shares:
Direct: n/a
Number of voting rights (ix):
Direct (x):
Indirect (xi): 2,060,728 
% of voting rights(x):
Direct:
Indirect: 2.19% 
B. Qualifying Financial Instruments 
Resulting situation after the triggering transaction (xii): 
Type of financial instrument: 
Expiration date (xiii): 
Exercise/Conversion Period/Date (xiv): 
Number of voting rights that may be acquired if the instrument is exercised/
converted: 
% of voting rights: 
C. Financial Instruments with similar economic effect to Qualifying Instruments
(xv), (xvi) 
Resulting situation after the triggering transaction: 
Type of financial instrument: 
Exercise Price: 
Expiration date (xvii): 
Exercise/Conversion Period/Date (xviii): 
Number of voting rights instrument refers to: 
% of voting rights (xix) (xx): 
Nominal:
Delta: 
Total (A + B + C): 
Number of voting rights: 2,060,728 
% of voting rights: 2.19% 
(9). Chain of controlled undertakings through which the voting rights and/or
the financial instruments are effectively held, if applicable (xv): 
Proxy Voting: 
(10). Name of the proxy holder: 
Nutraco Nominees Limited 
(11). Number of voting rights proxy holder will cease to hold: 
n/a 
(12). Date on which proxy holder will cease to hold voting rights: 
n/a 
(13). Additional information: 
These shares are held on behalf of participants in the BlackRock Investment
Trust savings products. BlackRock Investment Management (UK) Limited has a
notifiable interest in these shares because, in certain circumstances and
subject to certain limitations agreed with the Takeover Panel to ensure
compliance with the Takeover Code, with effect from 14 March 2007 BlackRock is
entitled to exercise the voting rights attached to these shares if the relevant
plan participants do not do so. 
(14). Contact name: 
K Higgins
For BlackRock Investment Management (UK) Limited
Secretary 
(15). Contact telephone number: 
020 7743 1089 
1 February 2013 
END 
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