Whenever a benefit with a vested interest in a trust is sui juris (ie of full age and sane) he may call for the trust property, and the trustees are obliged to transfer the legal title of it to him.
If he is the sole beneficiary, the trust will collapse.
About Legal Case Notes
Legal Case Notes is the leading database of case notes from the courts of England & Wales. Court judgments are generally lengthy and difficult to understand. Lawyers rely on case notes - summaries of the judgments - to save time. I have written over 600 high quality case notes, covering every aspect of English law. These are available on the site in clear, indexed form.