No, the British public always loved Churchill after WWII, even the ones that voted him out of office. They all knew that he was a great man who was the man of the hour for getting Britain through the war.
He was however a Tory, and the British public didn’t want to see the Tories in power again, they wanted a government that promised a socially democratic capitalist welfare state, rather than a continuation of the pre-war status quo.
A little thought would have told them if you vote for a welfare state, you just might end up on welfare.