Luton’s Dart will help the airport’s image as will the the extra nonstop train per hour to and from London. 21 minutes from London and a 5 minute Dart should bring the terminal to within 30 minutes of St Pancras. The downside is that there will be a price premium for East Midland Railways and that the 6 trains an hour Thameslink service will often be quicker than waiting half an hour if a train was missed.