I still believe the business community would love to have a London connection, probably LGW rather LHR.
Or LCY for London itself maybe?
7/10 - some potential
2/ HUY-Marsaillies-HUY (sorry at home and don't know the code!)
Code is MRS. 1/10. Only served from London, no business links so no chance from HUY
10/10 The market is there. Someone needs to come and get it
8/10. BHD would be better
6/10. Not sure on this one