Britain's North Sea oil and gas industry faces a bleak future where more fields are likely to become uneconomic and shut in as platforms close - unless costs can be controlled, operators say. For some elderly platforms in the Northern North Sea, time is running out. If the industry does not get to grips with costs quickly, fresh investment is likely to dry up, forcing unsaleable rusting rigs to be abandoned. "From a cost point of view, the chickens are coming home to roost," said Tim Walsh, senior vice president, asset integrity services at Lloyd's Register Energy.