The Brits going to Norway part was with Ryanair cheap tickets I guess. These days it's only four weekly Widerĝe visits from SVG. I have only had time to look in to the passengers numbers for 2006, 2007, 2010 and 2011 between NCL and Norway:
2006: around 94 thousand scheduled passengers
2007: around 44 thousand (Ryanair closed down TRF-NCL in March)
2010: around 39 thousand
2011: around 48 thousand (Ryanair closed down RYG-NCL at year end)
I flew NCL-RYG in early September 2010 and the number of passengers on that flight was well below 100 - not at all typical for FR.