What are the similarities and what are the differences in the development of Scandinavia

What are the similarities and what are the differences in the development of Scandinavia and England in the early Middle Ages?

We are talking about the period from the 5th century to 1000 AD. The similarities between England and Scandinavia can be found as follows:

Both regions were quite backward and poor for Europe, if we compare, for example, with Byzantium. Poverty was influenced by the climate and distance from the Mediterranean trade routes.
Both regions occupied a coastal position, in which they developed both the navy and the army.
There was no royal form of government, emperors or merchant republics like Venice.
Limited contact with the outside world, such as Arabs.

Differences:

England was located in the former territories of the Roman Empire, some cultural layer remained from the Romans. Scandinavia, on the contrary.
England was exposed to the raids of the Vikings (or Normans), and from Scandinavia they just sailed.
The British did not engage in sea expeditions, and the Vikings sailed to Greenland, Newfoundland.
The British had come to Christianity earlier and had nothing to do with Ancient Rus, and the Vikings even paved a trade route “from the Varangians to the Greeks.”