As such, it conveys its own distortions but is probably more representative of what the bulk of people were thinking - and hugely influential as well...
That this thinking struck a deep chord with the population is almost certainly proven by the result of the 1945 election, which provided a major mandate for the social left-wing reformers and their ideas, and came as a complete shock to the elite-structured establishment of the time.
How often does it need to be said - 'Never believe your own propaganda...'? The elite may have done a competent job in fighting the war, but completely failed to understand the public mood...
I have become convinced that Churchill lost the 1945 election in 1940. The issue turned on "war aims" which had been the main area of contention in 1940 and which Churchill resolutely refused to set out. That refusal was delivered in the 20 August speech on "The Few", and thus became the speech that lost Churchill the election.
The point, of course, was that in addition to being a war leader, Churchill was also a politician and had his own domestic front to fight. The war was expected then to come to an end in 1942, whence Churchill undoubtedly wanted to lead the nation in the ensuing peace. As the victories then mounted, he believed that his reputation as a war leader would carry the day, all on the back of his mantra "Empire, King and Country".
In the 1945 General Election, he chose to campaign with "Give us the tools, and we will finish the job", the slogan he had minted in February 1941. But, on 5 July, the people rejected the old man, his Empire and his status quo. They wanted a New Jerusalem and gave the tools to the Labour Party which was campaigning under the slogan "And now win the peace", with posters using Churchill's trademark V-sign. Clement Attlee was swept into power.