Blackrock Energy And Resources Income Trust Plc, formerly BlackRock Commodities Income Investment Trust Plc, is a United Kingdom-based investment trust company. The Company's objectives are to achieve an annual dividend target and, over the long term, capital growth by investing primarily in securities of companies operating in the mining and energy sectors. The Company invests in both sterling and non-sterling denominated securities. The Company invests in various sectors, such as diversified mining, gold, copper, silver, fertilizers, diamonds, steel, integrated oil, exploration and production, distribution, oil services and agricultural science. Its portfolio spans across various regions, including the United States, Canada, Latin America, Africa, Europe, Australia and Asia. Its subsidiary, BlackRock Commodities Securities Income Company Limited, is engaged in option writing and investment dealing. BlackRock Investment Management (UK) Limited is the Company's investment manager.