Kewujudan amanah konstruktif adalah berbangkit dalam banyak keadaan. Keadaan-keadaan ini telah dibincangkan oleh Abdul Malik Ishak, HMT (pada ketika itu) dalam kes Pet Far Eastern (M) Sd Bhd v Tay Young Huat & ors [2999] 2 CLJ 886 seperti berikut: “A constructive trust is created and is held by a person in circumstances where it would be inequitable to allow him to assert full beneficial ownership of the property (Bannister v. Bannister [1948] 2 All ER 133; Hussey v. Palmer [1972] 3 All ER 744, [1972] 1 WLR 1286 CA; and Lyus v. Prowsa Developments Ltd [1982] 2 All ER 953, [1982] 1 WLR 1044). That person will hold the property in a fiduciary capacity and by virtue of his ownership of or dealings with that fiduciary property that he acquired that specific property subject to the constructive trust (Espinasse v. Lowe [1764] 7 Bro Parl Cas 345 at 355 HL; British Reinforced Concrete Engineering Co. v. Lind [1917] 86 LJ Ch 486; Re Eyre-Williams, Williams v. Williams[1923] 2 Ch 533; and Green v. Weatherill[1929] 2 Ch 213). But a stranger who receives property in circumstances where he has actual or constructive notice that the property that is being transferred to him is a trust property then he is said to be a constructive trustee of that trust property (Barnes v. Addy [1874] 9 Ch App 244 at S/N 0ib6LoivRU22qH18Ceu/vA 251; Soar v. Ashwell [1893] 2 QB 390 at 400, 405 CA; Belmont Finance Corpn v. Williams Furniture Ltd (No: 2) [1980] 1 All ER 393 CA). Put bluntly, a person who holds property on a constructive trust is described as a constructive trustee in respect of that property (Soar v. Ashwell (supra)). Treating and regarding a person as a constructive trustee is merely a formula to impose an equitable personal liability to account (Selangor United Rubber Estates Ltd v. Cradock (No: 3) [1968] 2 All ER 1073 at 1097, [1968] 1 WLR 1555 at 1582; and English v. Dedham Vale Properties Ltd [1978] 1 All ER 382 at 398, [1978] 1 WLR 93 at 110). Lord Denning MR, that innovative judge, introduced in Eves v. Eves [1975] 3 All ER 768 at 771, [1975] 1 WLR 1338 at 1341 CA a wider scope to constructive trust. His Lordship boldly held that a trust would be imposed whenever justice and good conscience require it. It was according to his Lordship a liberalising process founded on large doses on the principles of equity where the legal owner cannot conscientiously keep the property for himself but to allow another party to have the property wholly or on a sharing basis. His Lordship felt that this equitable remedy can enable an aggrieved party to obtain restitution. Mahon J of New Zealand in the case of Carly v. Farrelly [1975] 1 NZLR 356 at 367 criticised the approach adopted by Denning MR in Eves v. Eves (supra) and his Lordship remarked that the "supposed rule of equity which is not only vague in its outline but which must disqualify itself from acceptance as a valid principle of jurisprudence by its total uncertainty of application and result." S/N 0ib6LoivRU22qH18Ceu/vA