Is English Law hampered by the absence of the phrase 'unconscionable conduct'?

The phrase is used mainly in Antipodean and Pacific former British colonies but 'unconscionability' is used similarly in the U.S. and Canada. Wikipedia (https://en.wikipedia.org/wiki/Unconscion... holds that 'inequality of bargaining power' is 'essentially the same idea,' but Australian... show more The phrase is used mainly in Antipodean and Pacific former British colonies but 'unconscionability' is used similarly in the U.S. and Canada. Wikipedia (https://en.wikipedia.org/wiki/Unconscion... holds that 'inequality of bargaining power' is 'essentially the same idea,' but Australian guidance specifies 'against conscience as judged against the norms of society' (https://www.accc.gov.au/business/anti-co... which seems importantly different and stronger. My worry is that the English equivalent seems to lack the moral imperative of the phrase, and that all jurisdictions might ultimately see 'inequality of bargaining power' as normal, anyway, especially in the current political climate, and especially vis-a-vis tenants. The difference of emphasis between the mother country and her former colonies is perhaps, similar in the use of the phrase 'vexatious litigant' (see https://uk.answers.yahoo.com/question/in... but the practical difference is perhaps similarly marginal(?).
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