Burpbot - All good points, I guess it could spell the end to London Birmingham. Although when you look at it on a map, such a route is probably better served by rail given the distance. Doubt it would effect Manchester though, the Eurostar hasn't stopped flights to Paris. Plus train tickets are going up above inflation, this month they did again!
Cyrano - Not really too clued up on the Belfast Market so maybe your right. Southampton and Birmingham would be worth a shot, even just to fill a sector each day.