Pretty much how the Vikings behaved in England. For many years it was highly popular for Vikings to go to England and steal everything that wasn't nailed to the floor, but then they started realizing that England wasn't a bad place to live in, so they settled down and made friends with the locals they had previously beaten to a pulp.
The highlands of Scotland are pretty bleak and almost nobody in the UK but the few locals born there would want to live in the extreme climate. However the northermost region of Scotland is called "Sutherland" --you guessed it -- named by the Vikings who thought compared to Scandinavia the climate was warm and balmy, like we think of the Canary Islands today. . . The Danes took over most of the northern part of England from the 800's, and the locals called it the Danelaw the Viking capital was Jorvik, today York, in Jorvikshire, --sorry Yorkshire where the local dialects (now sadly dying out) have many antique Norse words and usages.