27. Quantum of interest.

27.     Quantum of interest.

Where the extent of the alienee's interest may possibly not be ascertainable until after the perpetuity period, the limitation is void1.

The quantum of interest may be validly ascertained by reference to any property existing at the date of the creation of the limitation or to the value of such property2.

Where the Perpetuities and Accumulations Act 1964 applies3, the limitation will be treated as valid until such time as it becomes established that the extent of the interest cannot be ascertained within the perpetuity period4.