Taxable person: land and buildings owned by more than one person: types of trust
Trust and property law is extremely complicated and there are many different types of trust. From a VAT point of view, all that is required is to determine whether it is the trustees or the beneficiaries who make any supply of selling, leasing or letting the land. This will establish who can opt to tax the land, and who should register for VAT in relation to the land.
You can find more details about trusts, and the types of supply they make at VATREG08000.