LNIDA - I think the point Skipness is trying to make is that while Norwegian may have excellent brand recognition by people is SE England fo travel to Scandinavia, in the same way that Aer Lingus are well known for flying to Ireland, neither Aer Lingus in 2009 nor Norwegian in 2013 are widely known by the general public for flying from Gatwick to the Med or Canaries. Aer Lingus did at least make a good try at publicising the fact, running ads on TV and large outdoor poster ads and in newspapers. I have seen very little advertising telling the public masses that Norwegian flies from Gatwick to Barcelona or Rome. The likely impact is slow bookings - either seats fly empty or are sold at firesale prices.
Norwegian have added a lot of capacity on non Scandi routes at Gatwick. The flights to Oslo should sell well, but when Joe Bloggs books to go to Malaga it's Easyjet or Monarch that pops into his head. Norwegian just doesn't get a look-in.