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

BLACKROCK COMMODITIES INCOME INVESTMENT TRUST PLC: Holding(s) in Company
TR-1(i): 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 financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: ( ) 
An event changing the breakdown of voting rights: ( ) 
Other (please specify) : ( ) 
(3). Full name of person(s) subject to the notification obligation (iii): 
Rathbone Brothers Plc 
(4). Full name of shareholder(s) (if different from 3.) (iv): 
Rathbone Brothers Plc
Rathbone Investment Management Limited
Rathbone Investment Management International Limited 
(5). Date of the transaction (and date on which the threshold is crossed or
reached if different) (v): 
16 July 2012 
(6). Date on which issuer notified: 
17 July 2012 (received by BlackRock on 24 July 2012) 
(7). Threshold(s) that is/are crossed or reached: 
5% 
(8). Notified details: 
A: Voting rights attached to shares 
Class/type of shares (if possible using the ISIN code): Ord/GB00B0N8MF98. 
Situation previous to the triggering transaction(vi):
Number of Shares: 4,512,167
Number of Voting rights(viii): 4,512,167 
Resulting situation after the triggering transaction(vii):
Number of shares:
DIRECT: n/a
Number of voting rights (ix):
Direct (x): n/a
Indirect (xi): 4,752,667 
% of voting rights:
Direct: n/a
Indirect: 5.02% 
B. Financial Instruments 
Resulting situation after the triggering transaction (xii): N/A 
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: 4,752,667 
% of voting rights: 5.02% 
(9). Chain of controlled undertakings through which the voting rights and/or
the financial instruments are effectively held, if applicable (xv): 
Rathbone Brothers Plc*
Rathbone Investment Management Limited - 4.98814%
Rathbone Investment Management International Limited - 0.02743% 
*Rathbone Brothers Plc is the holding company of the following. 
Proxy Voting: 
(10). Name of the proxy holder: 
N/A 
(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: 
Total shares used as denominator: 94,758,000 
(14). Contact name: 
Kerry Higgins
For BlackRock Investment Management (UK) Limited
Secretary 
(15). Contact telephone number: 
020 7743 1089 
24 July 2012 
END 
-0- Jul/24/2013 12:36 GMT
 
 
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