James George Hacker, Baron Hacker of Islington,, BSc (LSE), Hon. D.Phil. (Oxon.) is a fictional character in the 1980s British sitcom Yes Minister and Yes, Prime Minister. He is the minister of the fictional Department of Administrative Affairs, and later Prime Minister of the United Kingdom. He was portrayed originally by Paul Eddington, with David Haig taking on the part for the 2013 revival.