Press Association: Three groups bidding to take over the running of the UK’s Gatwick airport have all included plans for a second runway in their submissions, it emerged today. But the Conservative party, who also oppose a third runway at Heathrow, said they would not allow a second runway if they won the next general election. Local residents also vowed to oppose any expansion which, under an existing agreement, would not be able to take place before 2019. The deadline for bids for Gatwick, …