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In constrast to Green light theories of administrative law, 'green light' theories take a narrow, judge-centred view of the role of administrative law. They are centred on the assumption that the state is at odds with the individual, and that the courts must protect the individual from the exercise of arbitrary power. Red light theories derive, in part at least, from the Diceyan view of Parliamentary sovereignty. They suggest that administrative actions should continually be help up to scrutiny against the powers allocated by Parliament by the administrator.