It is a truth universally acknowledged (by trustees and trust lawyers, anyway) that a trust deed may not always do what they need it to. What, then, are trustees to do?
The 'rules' governing any individual trust are set out in the trust deed. However, trustees sometimes find that they want to do something—often for tax purposes—which the trust deed does not permit. In those circumstances they may wish to 'vary' the terms of the trust.
There are different ways in which this can be done, and these are different in England/Wales and Scotland.