Vedanta Ltd, the billionaire Anil Agarwal-controlled metals-to-oil conglomerate, said on Wednesday it was interested in buying the government's stake in the state-run Bharat Petroleum Corp Ltd, India's largest fuel retailer. “Vedanta's expression of interest (EoI) for BPCL is to evaluate potential synergies with our existing oil & gas business," the company said in a statement, adding that The EoI was at a "preliminary stage and exploratory in nature."