Think they would go for Edinburgh assume that the Scot's would kick up a fuss if one airport wasn't included Edinburgh would bring the North East a bit closer. Most of Yorkshire especially the larger places would be 2 hours from Manchester, Hull would be one that missed the boat but don't think they could do much better than the three they mentioned the obvious one's then Bristol and Edinburgh.They probably will include a Scottish airport (GLA is their biggest presence there) but the fact that the Scottish school holidays are a month ahead of England and Wales might be a factor to be taken into account. If it is to be GLA and BRS that would leave a large area in Yorkshire and the North East not directly covered.