Times (UK): GOVERNMENT proposals for a third runway at Heathrow airport are facing a possible legal challenge that could jeopardise the multi-billion-pound plan. Residents living under the flight path, local councils and environmental groups are consulting lawyers. Greenpeace is also seeking a judicial review.They believe there are strong grounds for arguing that the Department for Transport (DfT) consultation process is so flawed that it is not valid. Lawyers are examining …