hitler didn't want to invade Britain as he admired it. Why would he want to invade one of the strongest countries in the world with a chance of turning America, another strong country, against him. He wanted to make a greater German empire by invading some nebouring nations, and he wanted to invade russia because he hated the communists and saw them as sub human, and also because he wanted their land. He didn't want Britain to be apart of his empire. Even if he did invade Britain, he wouldn't have kept them under Germany's full control. After the war he would have given them independence but limited their power and also would make sure that Germany would have influence over them.