Churchill was decidedly more circumspect when it came to domestic British politics, in particular when the subject was post-war reconstruction. For good reason. Though leader of the Conservative Party from October 1940, he was also ‘national leader’ of a coalition government. This forced Churchill to maintain a delicate balance in the House of Commons where Tory MPs still held a majority of seats, but where his administration depended on the participation of both Labour and the Liberals. Conveniently, for Churchill, he could argue that it was premature to talk of what would happen after victory. To his mind, the important thing – indeed, the only thing – that mattered was winning the war. After the triumph at El Alamein, soon followed by Sir William Beveridge’s report on the future of social services, that position was no longer tenable. A post-war Britain could be detected just over the horizon, and the Beveridge Report laid out a blueprint for how that Britain could be a very different nation from the one that had emerged after the last world war.
As well as rallying his audience at home, Churchill also appealed to the United States to enter the war against Nazi Germany: ‘And if, which I do not for a moment believe, this island or large part of it were subjugated and starving, then our Empire beyond the seas, armed and guarded by the British Fleet, would carry on the struggle until, in God’s good time, the new world, with all its power and might, steps forth to the rescue and the liberation of the old’.
However, Smithsonian writes that the most surprising thing, is that Churchill’s speech was not broadcast over the radio to the British public, and that most Britons and Americans did not hear the speech until decades later. And the recording that has been heard round the world was actually recorded in 1949, from the comfort of his own home. The House of Commons was not wired for sound in 1940, so any public broadcast would have to be delivered again, specifically for radio. But Churchill was too busy and uninterested to do this, and so radio journalists just reported his words on the air.
The train stopped at the St. Louis station in the early morning of March 5. Churchill took a leisurely breakfast in his stateroom before he and the presidential party switched to a local train for Jefferson City. There, Churchill and Truman entered their open-car limousines for the motorcade into Fulton. Churchill found, to his dismay, that he was lacking the requisite prop—a cigar. So he stopped at a local tobacconist for the purchase.
“The battle of France is over. I expect that the Battle of Britain is about to begin. Upon this battle depends the survival of Christian civilisation. Upon it depends our own British life, and the long continuity of our institutions and our Empire. The whole fury and might of the enemy must very soon be turned upon us. Hitler knows that he will have to break us in this island or lose the war.
Marshal Josef Stalin makes a toast to Churchill on 30 November 1943, the British premier's 69th birthday, during the Tehran Conference. Stalin was a difficult ally and relations were not always this friendly. With Russia taking the brunt of the war against Germany, Stalin had aggressively insisted on an invasion of northern France. Churchill resisted. He believed that any premature 'Second Front' was likely to fail. At Tehran, a date was finally set for June 1944.

There is no evidence that any version of the speech, imposter or not, was broadcast on June 4, 1940. But Smithsonian writes that there are a few reasons behind the false memories. Perhaps there is a drive to remember the war in rosier terms than the actual details reveal. Or potentially people long to be part of a cultural moment, even if it didn’t exist.

In the most famous passage of his speech, Churchill warned Britain about the possible collapse of France and that, consequently, she would stand alone against Germany and face an invasion. He left the House in no doubt what the resolution would be should that occur: 'We shall fight in France, we shall fight on the seas and oceans, we shall fight with growing confidence and growing strength in the air, we shall defend our island whatever the cost may be. We shall fight on the beaches, 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!'.
First, Poland has been again overrun by two of the great powers which held her in bondage for 150 years but were unable to quench the spirit of the Polish nation. The heroic defense of Warsaw shows that the soul of Poland is indestructible, and that she will rise again like a rock which may for a spell be submerged by a tidal wave but which remains a rock.
Nevertheless, our thankfulness at the escape of our Army and so many men, whose loved ones have passed through an agonizing week, must not blind us to the fact that what has happened in France and Belgium is a colossal military disaster. The French Army has been weakened, the Belgian Army has been lost, a large part of those fortified lines upon which so much faith had been reposed is gone, many valuable mining districts and factories have passed into the enemy’s possession, the whole of the Channel ports are in his hands, with all the tragic consequences that follow from that, and we must expect another blow to be struck almost immediately at us or at France. We are told that Herr Hitler has a plan for invading the British Isles. This has often been thought of before. When Napoleon lay at Boulogne for a year with his flat-bottomed boats and his Grand Army, he was told by someone. “There are bitter weeds in England.” There are certainly a great many more of them since the British Expeditionary Force returned.

Winston Churchill Speech WW2