English to Portuguese Law/Patents Law (general) Criminal court

In any criminal proceedings, Section 9 Criminal Justice Act 1967 (CJA) provides that a written statement is admissible in evidence to the same extent as oral evidence.
Requirements
The use of the provision requires compliance with certain formalities set out in Section 9(2) and the Criminal Procedure Rules:
The statement must be signed by the witness.
There must be a declaration of truthfulness.
The statement must be served properly on other parties (unless agreed before or during the hearing).
There must be no objections to the tendering of the statement in evidence.
The statement must contain the witness' age at the beginning of the document, if they are under 18.
If the witness cannot read the statement, a signed declaration by the person who read the statement to the witness must be provided.