High Quality Content by WIKIPEDIA articles! Formalities in English law are required in some kinds of transaction by English contract law and trusts law. In a limited number of cases, agreements and trusts will be unenforceable unless they meet a certain form prescribed by statute. The main kinds of formality that a statute can require are to put the transaction in writing, to make a deed, or to register it at a government registrar (such as HM Land Registry or Companies House).