Ethelred the Pious
Englesk is the main language of England in the Ethelred the Pious timeline. It is a North Germanic (Scandinavian) language with major influence from Anglo-Saxon, the language of England before it was conquered by Scandinavians. It emerged during the Tenth Century from the interaction of the Anglo-Saxon inhabitants with thousands of immigrants from both Denmark and Norway.
Englesk is spoken in England and Ireland. Its influence can be detected in Icelandic, Greenlandic, and several Northwest Nordic languages.
Englesk is a working name for the language. It may change.