A Deed of Trust is a legal document. If you are considering a Declaration of Trust, it is important to understand what it is and how it can impact your legal and financial situation.These notes give general guidance on how to complete form TR1 for the transfer of property. A Declaration of Trust is based on co-owners contributions to the deposit, mortgage, and ongoing maintenance costs. For use in England and Wales only. Fill in a new or updated trust deed - a conveyancer can help you do this. A deed of trust can't be changed, but you can update the terms with a deed of variation, or, replace the old deed using a deed of surrender. 1. Complete the Application Form. Complete our online application form here. You can use this form to tell us about changes to the trustees named on your account.