The purpose of this report is to explore some of the factors which cause the evolution of the 'state intervention' through the processes of the governmental planning after the Second World War especially in the late 1960s and to settle how these factors bring about the political and constitutional changes in this country (I mainly discussed about the situations in England and Wales). It is a peculiarity of British Constitution that the principles governing the formation and working of the Cabinet and its relations with Parliament can be stated with hardly any reference to the law (see I. Jennings; Cabinet Government). The same as this, a further development occured in the 1960s when the Mr. Wilson's Labour Government entrusted economic planning to a new department and in 1970 when a new Prime Minister, Mr. Heath, introduced a central policy review staff (C.P.R.S.) into the Cabinet Office. Here the influence of the American theory of public administration was very apparent. But it should be noted that these changes in the central government do not necessarily mean the development of overlordship of Prime Minister or that of a pyramid co-ordinating governmental agencies. In this report, I further discussed about the problem of nationalisation of the industries under the Labour Governments and about the relationship between ordinary Court of Law and administrative (some learned Professors express as 'special') tribunals.
