Context. The demilitarization and occupation of the Channel Islands was allowed against Churchill’s explicit advice. Churchill’s own war cabinet overruled him on this.
Churchill also got voted out of office after the war, and they brought Labour and Clement Attlee down on themselves with all of their push to the left (NHS, nationalization of railroads and other industries, continued rationing, ad nauseam).
The Brits have been their own worst enemy over the years.