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 North American Income 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 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):

Brewin Dolphin Limited

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

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

15 August 2013

(6). Date on which issuer notified:

19 August 2013

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

15%

(8). Notified details:

A: Voting rights attached to shares

Class/type of shares (if possible using the ISIN code): Ord/GB00B7W0XJ61

Situation previous to the triggering transaction(vi):
Number of Shares: 12,507,219
Number of Voting rights(viii): 12,507,219

Resulting situation after the triggering transaction(vii):
Number of shares: n/a
DIRECT: n/a
Number of voting rights (ix):
Direct (x): n/a
Indirect (xi): 13,672,199

% of voting rights:
Direct: n/a
Indirect: 16.1823%

B. 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: 13,672,199

% of voting rights: 16.1823%

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

Indirect - Brewin Nominees (Channel Islands) Limited       105430    0.1248 %   
Indirect - Brewin Nominees Limited                        1727711    2.0449 %           
Indirect - Giltspur Nominees Limited                      6388454    7.5613 %   
Indirect - BDS Nominees Limited                           3443279    4.0754 %   
Indirect - Brewin Nominees Limited A/c Charity            1569090    1.8572 %   
Indirect - Brewin Nominees Limited A/c Offbond             438235    0.5187 %   
GRAND TOTAL                                              13672199   16.1823 %   

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:

Figures based on shares in issue of 84,488,500.

The indirect voting rights under (9) relate to shares held in client
portfolios, managed by those firms, under discretionary investment management
agreements.

(14). Contact name:

C Driscoll
For BlackRock Investment Management (UK) Limited
Secretary

(15). Contact telephone number:

020 7743 2427

19 August 2013