I wonder if those rotten Vikings were only coming home, since that love to boat thing was common to Norsemen & Picts. Course, the physical descriptions of the populations would argue against it.
The Viking genetic heritage in Britain used to be visible in East Anglia, which was the heart of the Danelaw. I think Canute (whose father Svein Forkbeard spent 20 years preparing his conquest of England, only to die just before the launch) made his landing there, but that's a dim and distant memory. :')