Britain against Itself: The Political Contradictions of Collectivism. By Samuel H. Beer (New York: Norton, 1982. xvi, 231p. $18.95, cloth; $5.95, paper). - The British Prime Minister. Edited by Anthony King (Durham: Duke University Press, 2d ed., 1985. xiv, 275p. $27.50, cloth; $12.95, paper). - Reagan, Thatcher, and the Politics of Decline. By Joel Krieger (New York: Oxford University Press, 1986. xv, 320p. $29.95, cloth; $11.95, paper). - Dilemmas of Change in British Politics. Edited by Donley T. Studlar and Jerold L. Waltman (Jackson: University Press of Mississippi, 1984. xiv, 251p. $17.50, cloth).