The World Wildlife Fund, an environmental campaign group, has filed a shareholder resolution at BP calling on the oil group to disclose how it measures the risk to shareholder value from drilling in environmentally or culturally sensitive areas. Shareholders will vote on the resolution at the company's annual meeting on April 18.

Robert Napier, chief executive of WWF-UK, said: 'BP cannot afford to rest on its green credentials and must disclose how it decides whether or not to drill for oil in the most environmentally important areas in the world.' The resolution is supported by Trillium Asset Management, Walden Asset Management, Ethos Funds of Switzerland, and Ethical Funds of Canada.