Portfolio Update

BLACKROCK FRONTIERS INVESTMENT TRUST PLC

All information is at 31 March 2013 and unaudited.

Performance at month end with net income reinvested

                                  One      Three      Six      One   Since
                                month     months   months     year  launch*
Sterling:
Share price                      5.4%      28.9%    31.7%    27.8%   10.1%
Net asset value                  0.1%      16.8%    22.3%    20.7%    8.2%
MSCI Frontiers Index (NR)        0.7%      15.8%    18.6%    17.5%    0.0%
MSCI EM Markets (NR)            -1.8%       5.3%    10.5%     7.3%    1.0%
US Dollars:
Net asset value                  0.2%       9.1%    15.0%    14.7%    5.3%
MSCI Frontiers Index (NR)        0.7%       8.2%    11.5%    11.6%   -2.7%
MSCI EM Markets (NR)            -1.7%      -1.6%     3.9%     2.0%   -1.7%

Sources: BlackRock and Standard & Poor's Micropal
* 17 December 2010.

At month end
US Dollar:
Net asset value - capital only:               150.74c
Net asset value - cum income:                 153.03c
Sterling:
Net asset value - capital only:                99.28p
Net asset value - cum income:                 100.79p
Share price:                                  104.50p
Total assets (including income):               £95.5m
Premium to cum-income NAV:                       3.7%
Gearing:                                          nil
Gearing range (as a % of gross assets):         0-20%
Net yield:                                       2.4%
Ordinary shares in issue:                  94,766,267

Benchmark
Sector Analysis   Gross assets(%)*         Country Analysis  Gross assets(%)*

Financials              30.2               Nigeria                    14.0
Telecommunication       15.5               Qatar                      12.2
Consumer Staples        15.1               United Arab Emirates       11.0
Energy                  10.3               Saudi Arabia                9.3
Industrials              7.9               Kazakhstan                  9.1
Healthcare               6.4               Vietnam                     6.0
Consumer Discretionary   5.0               Bangladesh                  4.6
Materials                4.5               Iraq                        4.5
Utilities                2.7               Ukraine                     4.1
Technology               1.9               Sri Lanka                   3.0
                       -----               Argentina                   2.8
Total                   99.5               Croatia                     2.7
                       -----               Pan Africa                  2.6
Short positions         -1.2               Panama                      2.4
                       =====               Algeria                     2.3
                                           Kenya                       2.1
                                           Cambodia                    2.1
                                           Kuwait                      1.8
                                           Romania                     1.1
                                           Lebanon                     0.8
                                           Cameroon                    0.8
                                           Slovenia                    0.2
                                                                     -----
                                                                      99.5
                                                                     =====
                                           Short positions            -1.2
                                                                     =====

*reflects gross market exposure from contracts for difference (CFDs)

  Market Exposure

        30.04  31.05  30.06  31.07  31.08  30.09  31.10  30.11  31.12  31.01  28.02  31.03
         2012   2012   2012   2012   2012   2012   2012   2012   2012   2013   2013   2013
            %      %      %      %      %      %      %      %      %      %      %      %
                               
Long    100.8   99.2   97.2  101.9   96.5   99.1  101.0  102.0  103.4  105.1  104.1   99.5
Short     2.1    0.0    2.6    2.6    2.5    2.6    4.2    4.9    5.2    3.5    1.2    1.2
Gross   102.9   99.2   99.8  104.5   99.0  101.7  105.2  106.9  108.6  108.6  105.3  100.7
Net      98.7   99.2   94.6   99.3   94.0   96.5   96.8   97.1   98.2  101.6  102.9   98.3
 
Ten Largest Equity Investments

Company                              Country of Risk          % of gross assets

Zenith Bank                          Nigeria                       4.5%
Kazmunaigas Exploration              Kazakhstan                    4.1%
Halyk Savings Bank                   Kazakhstan                    4.1%
Etihad Etisalat                      Saudi Arabia                  3.7%
FBN Holdings                         Nigeria                       3.3%
MHP                                  Ukraine                       3.3%
Qatar Telecom                        Qatar                         3.3%
Hatton National Bank                 Sri Lanka                     3.0%
Petrovietnam Fertilizer & Chemical   Vietnam                       2.7%
Qatar Electricity & Water            Qatar                         2.7%

Commenting on the markets, Sam Vecht, representing the Investment Manager
noted:

Market overview

In March, the Frontier Markets Index returned 0.7% (in sterling terms with net
income reinvested), outperforming the MSCI Emerging Markets Index which fell by 
1.8%. Emerging Markets suffered as the Cyprus banking system collapsed, reminding
investors of the unresolved problems in the Eurozone.  The Cypriot solution of
a banking 'bail-in' using unsecured deposits set a precedent which negatively
impacted sentiment surrounding risk assets.  Superior returns in Frontier
Markets were driven by strong growth in earnings reported by underlying
companies and a lack of the prolific share issuance currently hitting Emerging
Markets. 

The best performing market in the Frontier Market universe was Kenya. In
contrast to events of 5 years ago, the Kenyan presidential election has passed
off relatively peacefully. Since the month end, Uhuru Kenyatta has been sworn
in as President of Kenya, emulating his father who led the country from 1964 to
1978.

Argentina rose by 11% (in sterling terms) as fears of a sovereign default, which 
had led to a very aggressive sell off at the end of February, subsided somewhat.  

Qatar also outperformed during the month, rising.  Increasing bullishness from
local fund managers has seen a rotation from fixed income to equity assets. The
improvement in sentiment has been driven by increased liquidity as evidenced by
a more than 30% increase in deposits in the local banks over the last year.

The weakest performing market was the Ukraine. The country's proximity to the
Eurozone and close financial ties with Cyprus impacted confidence in an economy
which is experiencing sluggish economic growth.   

Portfolio overview

The Company's NAV returned 0.1% (in sterling terms with net income reinvested),
underperforming the index by 0.6%.  Whilst, the portfolio was well positioned
across geographies, a number of stock specific issues hurt performance. 

UAE hospital operator, NMC Health, continued its strong run year to date,
rising by a further 16% in March. The company reported strong results at the
end of February with net profit rising 36% year on year.  The company will be a
key beneficiary of the introduction of private health insurance in Dubai, which
we expect to be announced in the near future.

Another stock which contributed strongly to performance was Sri Lankan
financial Hatton National Bank.  Having reported strong numbers at the end of
February, well above analyst expectations, investors have become increasingly
excited about the banks prospects.  The bank also substantially increased its
final dividend from just under 3 Rupees in 2012 to 7 Rupees in 2013. 

The largest individual detractor from performance was Cameroon based miner,
Sundance Resources. A $1.3 billion takeover by Chinese company Hanlong was
withdrawn as Hanlong was unable to raise sufficient financing. 

The Company's performance also suffered from holdings in Kazakh miner, Eurasian
Natural Resources Company, which fell along with the global commodity sector as
economic data from China disappointed.  

Portfolio Activity

The Company is invested in 53 stocks across 22 countries.

The Company opened a position in UAE financial, Dubai Islamic Bank as we
believed the franchise to be materially undervalued.

The Company reduced the positions in UAE hospital operator, NMC Health and
Cambodian casino operator, Naga Corp, after a run of good performance, locking
in some profits for the Company.

Market Outlook

Although flows into risky assets slowed somewhat in March, whilst developed
market Central Banks continue to aggressively provide liquidity, we would
expect these flows to continue.  Despite these flows, Emerging Market returns
have been muted so far this year due to weaker than expected corporate results
across some of the major markets and increased issuance, especially in Asia,
which has absorbed much of this liquidity.  In contrast to Emerging Markets,
corporate results across Frontier Markets have surprised more positively and
there has been minimal stock issuance. 

Frontier Markets continue to stand out for their low valuations and high
dividend yields. Positive structural reforms, high growth and well-capitalised,
liquid banking systems leave several Frontier economies well placed in the
current global environment. Frontier stocks, particularly in the domestic or
consumer sectors are valued at a fraction of their emerging peers despite
higher growth rates and higher margins.

19 April 2013

ENDS

Latest information is available by typing www.blackrock.co.uk/brfi on the
internet, "BLRKINDEX" on Reuters, "BLRK" on Bloomberg or "8800" on Topic 3 (ICV
terminal). Neither the contents of the Manager's website nor the contents of
any website accessible from hyperlinks on the Manager's website (or any other
website) is incorporated into, or forms part of, this announcement.