Lipkin Gorman v Karpnale Ltd
Lipkin Gorman v Karpnale Ltd [1988] UKHL 12 is a foundational English unjust enrichment case. The House of Lords unanimously established that the basis of an action for money had and received is the principle of unjust enrichment, and that an award of restitution is subject to a defence of change of position. This secured unjust enrichment as the third pillar in English law of the law of obligations, along with contract and tort. It has been called a landmark decision.
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English unjust enrichment law
The English law of unjust enrichment is part of the English law of obligations, along with the law of contract, tort, and trusts. The law of unjust enrichment deals with circumstances in which one person is required to make restitution of a benefit acquired at the expense of another in circumstances which are unjust.
Rowe v Vale of White Horse DC, held that receiving sewerage services was an "incontrovertible benefit".