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 Frontiers Investment Trust

(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 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, Inc.

(4). Full name of shareholder(s) (if different from 3.) (iv):

N/A

(5). Date of the transaction and date on which the threshold is crossed or
reached (v):

17 June 2011

(6). Date on which issuer notified:

21 June 2011

(7). Threshold(s) that is/are crossed or reached:

Holding has gone above 26%

(8). Notified details:

A: Voting rights attached to shares (viii, ix)

Class/type of shares (if possible using the ISIN code): Ordinary Shares:
GB00B3SXM832

Situation previous to the triggering transaction:
Number of Shares: 23,691,565
Number of Voting rights: 23,691,565

Resulting situation after the triggering transaction:
Number of shares: N/A
Direct: N/A
Number of voting rights:
Direct (xi): N/A
Indirect (xii): 24,805,517

% of voting rights (x):
Direct: N/A
Indirect: 26.18%

B. Qualifying Financial Instruments

Resulting situation after the triggering transaction:

Type of financial instrument:

Expiration date (xiii):

Exercise/Conversion Period (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 Financial
Instruments xv, xvi

Resulting situation after the triggering transaction:

Type of financial instrument:

Exercise price:

Expiration date (xvii):

Exercise/Conversion period (xviii):

Number of voting rights instrument refers to:

% of voting rights (xix, xx):

Nominal:

Delta:

Total (A + B + C):

Number of voting rights: 24,805,517

% of voting rights: 26.18%

(9). Chain of controlled undertakings through which the voting rights and/or
the financial instruments are effectively held, if applicable (xxi):

BlackRock Investment Management (UK) Limited - 24,805,517 (26.18%)

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:

N/A

(14). Contact name:

Mrs S Beynsberger
For BlackRock Investment Management (UK) Limited
Company Secretary

(15). Contact telephone number:

020 7743 2639


21 June 2011