Luo Xing Juan Angela v Estate of Hui Shui See Willy (deceased) and Others

Proprietary and promissory estoppel are unified by the requirement of unconscionability; an assurance, reliance and detriment can found estoppel relief, and where the promisor's power was exercisable only through a company the assurance may be construed as a promise to exercise his shareholder powers, enforceable by equitable relief.