Many people in the British Isles have some Viking ancestry. It would be surprising if that were not the case. Of course, many also have Roman and black African ancestors, as well as "native Briton" and Anglo-Saxon and ancestors from many parts of Europe and the world if you go back far enough. And that applies to most people in most parts of the world.
Why the interest in possible Viking ancestry for Sir Isaac Newton? It is unlikely that any DNA tests on his body (now in the grave for around 300 years) would yield sufficiently accurate results for a definite statement about all his possible ancestry.
What is your ancestry, and where do you live? How long have your ancestors been around where you live now?