In the late spring and summer of 1982, Nor-fly Charter of Norway operated a series of Saturday flights to and from Leeds Bradford with their Convair 580s, usually LN-BWN, as I recall. I don't know the purpose of these flights, where they came from and went to nor whom was the client. Perhaps the passengers were meeting cruise ships somewhere in Norway or were maybe complete ship's crews ? There may have been a football connection but the World Cup was in Mexico that year so it's doubtful.