Further Reading:
Harris ‘Trust, Power and Duty’ 87 L.Q.R. 310
Donovan, ‘The Protector: New Wine in Old Bottles?’ 63, in Trends in Contemporary Trust Law (Oakley, ed) (Clarendon Press, 1996).
Thomas, Powers (1999, Sweet & Maxwell Ltd)
A. Difficulties Inherent In Making The Distinction
1. Overlapping Definitions
Hanbury & Maudsley (13th edition) p.163:
‘Essentially a trust is imperative and a power discretionary. But the dividing line is not as clear as one would hope; for many trusts contain discretionary elements; and many powers are given to trustees who are governed by fiduciary duties in the exercise of their powers.’
McPhail v. Doulton [1971] AC 242 at 448G per Lord Wilberforce:
‘It is striking how narrow and in a sense artificial is the distinction...between trusts, or as the particular type of trust is called, trust powers and powers...A layman and, I suspect, a logician would find it hard to understand what the difference is.’
2. Confusion Of Terminology
Mettoy Pension Trustees Ltd v. Evans [1990] 1 W.L.R. 1587
3. Power Or Discretionary Trust May Be Contained Within An Existing Trust
4. Question Is Linked With Requirement Of Certainty Of Intention (see III. infra.)
5. Exhaustive and Non-exhaustive Discretionary Trusts Re Gourju’s Will Trusts [1943] Ch 24
B. Making The Distinction
1. Asking The Correct Questions
Two distinct but allied questions when interpreting a disposition:
a. Does the disposition create a power of appointment or a discretionary trust?*
b. What obligations - if any - are there on the person vested with the discretion to exercise it?
* considered infra. under certainty of intention
2. The Four Possible Ways In Which A Disposition May Be Interpreted
a. personal power
b. mere power
c. fiduciary power d. discretionary trust
3. Need For Consistent Terminology a. Discretionary Trust b. Power of Appointment - mere and fiduciary c. Dispositions/Discretions To