In 1920, after two years in the largely rural diocese of Hereford, Henson returned to Durham as its bishop. The industrial north-east of England, including County Durham, was badly affected by an economic depression. Henson was opposed to strikes, trade unions and socialism, and for a time his forthright expression of his views made him unpopular in the diocese. His opinions about some Church matters changed radically during his career: at first a strong advocate of the Church of England's continued establishment as the country's official church, he came to believe that politicians could not be trusted to legislate properly on ecclesiastical matters, and he espoused the cause of disestablishment. He campaigned against efforts to introduce prohibition, exploitation of foreign workers by British companies, and fascist and Nazi aggression, and supported reform of the divorce laws, a controversial revision of the Book of Common Prayer and ecumenism.