Who was chamberlain strongest crtic of the course of action with hitle?

Neville Chamberlain's strongest critic regarding his approach to Adolf Hitler was Winston Churchill. Churchill vehemently opposed the policy of appeasement, arguing that it emboldened Hitler and compromised Britain's security. He believed that standing up to Nazi aggression was essential to prevent a larger conflict, warning that concessions would only lead to further demands. Churchill's views ultimately gained prominence as World War II unfolded, highlighting the failures of Chamberlain's strategy.