>>4301025scania, jutland, and the Danish islands, were historically hinabuted by the Angles and jutes as well as the danes
both of these groups migrating to england
while east Germany (Prussia Silesia brandemburg/Eastmark and pommerania) was slav during the times of the english migrations
if england should own jutland for its historical ties it should also own the rest
as well as frisia and holland for its ties too
as well as the rest of saxony, which they also have ties (the original Saxony is today known as lower saxony but back in the day it was the original)
during the english migrations the saxons also lived in modern day saxony (eastmark) and in more westwards regions
I merely represented a plausible hypothetical etnocultural map of a united anglo germanic state
you could also try to make the starting point later by removing all dane lands and prussia and frisia and only keeping lower saxony
which is what england looked like under queen Victoria and the hannoverian dinasty