Principle of proportionality in judicial review on discretionary powers in English administrative law

Judicial review on discretionary power is among the important issue in administrative law that principle of proportionality is application in this. The aim of this research was to study the principle of proportionality in judicial review on discretionary power. Understanding and defining this principle is an important aid to Iranian lawyers. Research methods this article, is a library. The principle of proportionality as structured test invoked when a legal measure under scrutiny harms or restricts a valuable interest. Achieving a proportionality or balance between the legal measure and the legal aim is often thought to be the essence of the principle of proportionality. Substantive of rule of law and enact human right 1998 become Executive back ground principle of proportionality in English administrative law.