BP is a British multinational oil and gas company headquartered in London, United Kingdom. It is the third-largest energy company and fourth-largest company in the world measured by 2011 revenues and is one of the six oil and gas “supermajors”. It is vertically integrated and operates in all areas of the oil and gas industry, including exploration and production, refining, distribution and marketing, petrochemicals, power generation and trading. It also has renewable energy activities in biofuels and wind power.
Authors bio is coming up shortly. 