Times (UK): BP has conceded that the extent of an oil slick in the Gulf of Mexico may be much worse than originally thought. The oil giant was responding to a warning from US officials that the amount of crude leaking from the sunken Deepwater Horizon rig could be five times greater than early estimates. “I would say the range is 1,000 to 5,000 barrels a day,’ Doug Suttles, BP’s chief operating officer for exploration and production, said. His remarks followed the discovery of a …