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One of the most contested issues in UK public law is how to calibrate the appropriate intensity of proportionality review in human rights adjudication. Here the challenge lies in formulating a theory of intensity of review that can both comply with the constitutional framework introduced by the Human Rights Act 1998 (‘HRA’) and accommodate courts’ varying levels of competence in different areas of litigation. This article attempts to sketch such a theory in two steps. First, it argues that to fulfil the constitutional expectations brought about by the HRA, a minimum rigour of proportionality review should be observed. This baseline consists of requiring the government to demonstrate to the courts by means of cogent and sufficient evidence that a rights-limiting measure satisfies the distinct stages of the proportionality test. Secondly, this article highlights the ways in which compliance with this baseline can nonetheless accommodate the courts’ varying levels of competence in different adjudicative contexts. In particular, courts can vary the intensity of review once the baseline level of review is reached and adjust the nature of the evidence required from the government.