BLACKROCK COMMODITIES INCOME INVESTMENT TRUST plc                                                               
                                                                                                                    
    All information is at 31 December 2016 and unaudited.                                                           
                                                                                                                    
    Performance at month end with net income reinvested                                                             
                                                                                                                    
                                        One      Three                    Six       One        Three           Five 
                                                                                                                    
                                      Month     Months                 Months      Year        Years          Years 
                                                                                                                    
    Net asset value                    3.0%      12.9%                  22.9%     68.0%        -0.2%          -7.3% 
                                                                                                                    
    Share price                        7.2%      16.9%                  38.4%     71.7%        -1.5%          -2.8% 
                                                                                                                    
    Sources: Datastream, BlackRock                                                                                  
                                                                                                                    
    At month end                                                                                                    
                                                                                                                    
    Net asset value - capital only:                                                          84.60p                 
                                                                                                                    
    Net asset value cum income*:                                                             85.21p                 
                                                                                                                    
    Share price:                                                                             87.75p                 
                                                                                                                    
    Premium to NAV (cum income):                                                               3.0%                 
                                                                                                                    
    Net yield:                                                                                 5.7%                 
                                                                                                                    
    Gearing - cum income:                                                                      5.9%                 
                                                                                                                    
    Total assets^^:                                                                         £113.1m                 
                                                                                                                    
    Ordinary shares in issue:                                                           118,768,000                 
                                                                                                                    
    Gearing range (as a % of net assets):                                                     0-20%                 
                                                                                                                    
    Ongoing charges**:                                                                         1.4%                 
                                                                                                                    
    * Includes net revenue of 0.61p.                                                                                
    ^^ Includes current year revenue.                                                                               
    ** Calculated as a percentage of average net assets and using expenses,                                         
    excluding any interest costs and excluding taxation for the year ended 30                                       
    November 2015.                                                                                                  
                                                                                                                    
    Sector Analysis                  % Total Assets       Country Analysis                           % Total Assets 
                                                                                                                    
    Integrated Oil                             22.4       Global                                                48.6
                                                                                                                    
    Diversified Mining                         17.8       USA                                                   23.7
                                                                                                                    
    Exploration & Production                   16.8       Canada                                                 8.0
                                                                                                                    
    Gold                                       12.4       Latin America                                          4.4
                                                                                                                    
    Copper                                      7.2       Africa                                                 3.6
                                                                                                                    
    Distribution                                3.5       Europe                                                 3.4
                                                                                                                    
    Silver                                      3.4       Australia                                              2.6
                                                                                                                    
    Nickel                                      3.0       Asia                                                   0.4
                                                                                                                    
    Oil Services                                2.5       Net current assets                                     5.3
                                                                                                                    
    Fertilizers                                 1.9                                                            -----
                                                                                                                    
    Diamonds                                    1.6                                                            100.0
                                                                                                                    
    Agriculture Science                         1.2                                                            =====
                                                                                                                    
    Steel                                       1.1                                                                 
                                                                                                                    
    Industrial Minerals                       (0.1)                                                                 
                                                                                                                    
    Net current assets                          5.3                                                                 
                                                                                                                    
                                              -----                                                                 
                                                                                                                    
                                              100.0                                                                 
                                                                                                                    
                                              =====                                                                 
                                                                                                                    
    Ten Largest Investments (in %                                                                                   
    of Total Assets order)                                                                                          
                                                                                                                    
    Company                                              Region of Risk                     % Total Assets          
                                                                                                                    
    Royal Dutch Shell 'B'                                        Global                                6.6          
                                                                                                                    
    First Quantum Minerals                                       Global                                6.5          
                                                                                                                    
    ExxonMobil                                                   Global                                6.0          
                                                                                                                    
    Rio Tinto                                                    Global                                4.9          
                                                                                                                    
    BHP Billiton                                                 Global                                3.5          
                                                                                                                    
    Norilsk Nickel                                                  USA                                3.0          
                                                                                                                    
    Vale                                                  Latin America                                2.9          
                                                                                                                    
    ConocoPhillips                                                  USA                                2.9          
                                                                                                                    
    Anadarko Petroleum                                              USA                                2.8          
                                                                                                                    
    Barrick Gold                                                 Global                                2.7          
                                                                                                                    
                                                                                                                    
    Commenting on the markets, Tom Holl, representing the Investment Manager noted:                                 
                                                                                                                    
    The Company's NAV rose by 3.0% during the month, bringing the full year 2016                                    
    performance to +68.0% (both in GBP terms with net income reinvested).                                           
                                                                                                                    
    Performance was mixed across the natural resources sector during the month,                                     
    with energy displaying positive returns, whilst the mining sector proved to be                                  
    the laggard.                                                                                                    
                                                                                                                    
    Data from China was largely positive during the month, with November's official                                 
    industrial production rising by 6.2% year-on-year, above the 6.1% that markets                                  
    had expected. Retail sales reported a 10.8% year-on-year gain, ahead of the                                     
    10.2% increase anticipated, whilst fixed-asset investment was in-line with                                      
    market hopes, rising by 8.3%. One dark spot amongst the data was property sales                                 
    growth; at 7.9% year-on-year in November it hit its lowest point since December                                 
    2015. Despite this supportive economic data, the base metals came under                                         
    pressure with nickel, copper and zinc declining by -11.0%, -5.0% and -4.9%                                      
    respectively. This appeared to be driven by continued US dollar strength as the                                 
    10-year US Treasury yield extended its climb higher, fuelled by Trump's pledged                                 
    stimulus measures.                                                                                              
                                                                                                                    
    Elsewhere, gold bullion declined by -1.4%, finishing the month at a price of                                    
    $1,157/oz. Whilst moves in the underlying gold price continued to be weak, gold                                 
    equities recovered some of the losses they experienced in November. Within the                                  
    bulk commodities, coking coal was not immune to the price sell-off as it                                        
    finished the month -28.9% lower (the coking coal price remains +146.2% higher                                   
    than it started the year). Those companies more exposed to this came under                                      
    pressure during the month.                                                                                      
                                                                                                                    
    The energy sector was supported by continued positive performance from oil                                      
    prices in December, as Brent and WTI oil prices gained +12.6% and +8.8% to                                      
    finish the year at $55/bbl and $54/bbl. By the end of the month, the sector (as                                 
    measured by the MSCI World Energy Index) had gained +27.8% over 2016, strongly                                  
    outperforming broader equity markets, whilst Brent and WTI oil prices had risen                                 
    +51.6% and +44.8% respectively. The sector entered December with positive                                       
    momentum on the back of OPEC's announcement at the end of November that it had                                  
    agreed to adjust production by 1.2 million barrels per day (mbpd), down to a                                    
    targeted level of 32.5mbpd effective from the 1st January 2017. Following this,                                 
    OPEC ministers and ministers from 10 other major oil producing countries met in                                 
    Vienna on the 10th December to discuss non-OPEC production cuts. Oil prices                                     
    surged as it was announced that non-OPEC countries had agreed to a combined cut                                 
    of 558kbpd allaying one of the concerns the market had after the deal was                                       
    initially announced.                                                                                            
                                                                                                                    
    Other sector news during December included Donald Trump confirming current                                      
    chief executive of ExxonMobil, Rex Tillerson, as his choice for US Secretary of                                 
    State (a man who is perceived as supportive for US oil and gas producers) and M                                 
    &A activity for UK integrated oil and gas company BP. During a busy month for                                   
    the company, BP announced it had signed agreements with Kosmos Energy to                                        
    acquire a 62% stake in Kosmos' exploration blocks in Mauritania and a 32.5%                                     
    stake in Kosmos' exploration blocks off Senegal. The company also announced the                                 
    acquisition of Woolworths Ltd's network of Australian gas stations and the                                      
    approval of its Mad Dog Phase 2 project in the Deepwater Gulf of Mexico.                                        
                                                                                                                    
    All data points are in US dollar terms unless otherwise specified.                                              
                                                                                                                    
    18 January 2016