Scotland’s First Minister is “very concerned” by reports that oil giant BP is considering leaving the North Sea . Bloomberg reported the firm had begun an internal review of its North Sea operations, though no final decision had been made. Speaking to the Press Association on Saturday during a campaign stop in Glasgow, John Swinney put the blame squarely on the UK Government and its windfall tax on oil and gas. “I’ve seen the reports and I’d obviously be very concerned about that,” the First Minister said. “What will be driving this is the hostile taxation approach of the United Kingdom Government through the energy profits levy, and I’ve told the Prime Minister to his face that the energy profits levy is causing significant economic damage to Scotland and the North Sea oil and gas sector.…