At some point England went to war with Mega France over Britanny and I sweeped in once his armies where destroyed by the French forces. I took the southern provinces (Wessex, Kent, Oxfordshire and Essex (Or East Anglia.) and continued with my conquest of England. Using my lands in the HRE as financial and menpower base I managed to conquer the entirety of England by 1410. And in 1418 or so my first cores arrived on Wessex and Kent. In the meantime England continued it's weird adventures in Morroco, Anatolia and France. Which wore them down even more. While they where supposed to fight me.