The Grenville ministry was a British Government headed by George Grenville which served between 16 April 1763 and 13 July 1765. It was formed after the previous Prime Minister, the Earl of Bute, had resigned following fierce criticism of his signing of the Treaty of Paris with its perceived lenient terms for France and Spain despite Britain's successes in the Seven Years War. Grenville's government was made up largely of the same members as Bute's had. George III had a violent dislike of the new government because of his resentment of the way they had replaced his favourite Bute .