English and German are both West Germanic languages, but English has had a lot of influence from French, and to a lesser extent from the Celtic and Brythonic languages. German has undergone its own separate evolutionary history.
As much as English is German from 5000 years ago...
Actually, the ancestor of the English language was most probably brought to Britain by Germanic people from what nowadays would be the region between Netherlands and north west Germany.
Plus, it wasn't 5000, but maybe about 3000 years ago.
It was only about 1600 years ago. Plus the region where the Saxons, Angles, Jutes and Frisians lived was quite a lot bigger. From the north of the Netherlands up to northern Denmark. You can still see the similarities when you compare High German, Low German, Frisian and English words.
