Negative For Native British M284

My father's Y-DNA test for Native British SNP M284 came back negative. So, Dad has now tested negative for all known subclades of I-M223. M284 is the I-M223 marker indigenous to the British Isles and is found exclusively in Britain.

Now it is confirmed that my Dad's genetic fatherline is not native to the British Isles. With all of the other negative results so far, it is looking that my Dad's genetic fatherline is most likely ethnically Anglo-Viking and native to the area of Northern Germany, Southern Sweden and Doggerland. My Dad's genetic fatherline most likely came to Britain during the Anglo-Viking invasions.