TRSM25020 | Types of trust that need to be registered: contents: registrable taxable trusts: contents: what is a relevant trust
From HM Revenue & Customs · Trust Registration Service Manual
A ‘relevant trust’ is any one of the following:
a non-UK express trust which is liable to UK taxation as a result of receiving UK source income or holding assets in the UK (see TRSM25030); or
any other non-UK express trust which is not excluded by the exclusions listed at TRSM23000 onwards, where one of the following applies:
at least one trustee is UK resident and the trustees enter into a business relationship with a UK relevant person (see TRSM24000); or
the trustees acquire land or property in the UK.