CAMPAIGNERS have vowed to continue fighting against plans for a third runway at Heathrow airport after a Supreme Court ruling lifted the ban on the controversial project today. The runway was previously blocked by a court of appeal ruling, which found that the government had failed to take account of its own climate commitments when it approved the scheme. But the Supreme Court found that this was not necessary as the decision was reached at a time when the previous climate targets were less stringent. The ruling means that Heathrow’s owners can seek planning permission. Environmental and local campaigners have described the ruling as “disappointing,” but argue that the runway plans are “far from certain.”