No LTNman, adfly is correct.
Between around 1997 and 9/11, SK had 3x daily CPH, 2x daily ARN and 2x daily OSL. Towards the end 2x daily LHR-SVG was also moved over. Additionally, BGO was also served daily through subsidiary Braathens, moving in from LGW. But, 9/11 happened and along with LH a hasty retreat was made with ops consolidated back at LHR.
Aside from the charters, STN had always been first choice for Scandinavian carriers until very recently. Norwegian as mentioned had a sizeable operation, but also just about every start-up has passed through (Color Air, Goodjet, Flying Finn and more besides). FR and EZY also had a Goidelic few routes between them, and CPH was of course an original Go destination.