Hitler believed that since the fighting was over, Winston Churchill would want to sign a peace treaty with Hitler. Churchill wouldn’t want to put his country at risk, since the German army was so much stronger. But the opposite happens. Winston Churchill gave an iconic speech.
“We shall fight on the landing grounds. We shall fight in the fields. And in the streets. We shall fight in the hills. We shall never SURRENDER!” – by Winston Churchill
He made it clear that there would be no peace treaty between Churchill and Hitler. The war against Germany would continue. This speech meant that Hitler would want to invade the UK too. And Hitler did try to. Hitler planned Operation Sea Lion. To invade the British.
They had to come up with a strategy to attack Britain. There is no land connection between the UK and mainland Europe. So the army couldn’t simply be deployed. If they were to try sending ships, British Royal Navy had more ships than Germany. The Germans would be at a loss.