The Department of Justice in Northern Ireland must prepare a code of practice as to the exercise, in relation to Northern Ireland, by constables and accredited financial investigators of functions they have under this Chapter.

After the Department of Justice has proceeded under subsection (2) it must lay the code before the Northern Ireland Assembly.

When the Department of Justice has done so it may bring the code into operation on such day as the Department of Justice may appoint by order.

Section 41(3) of the Interpretation Act (Northern Ireland) 1954 applies for the purposes of subsection (3) in relation to the laying of a code as it applies in relation to the laying of a statutory document under an enactment.

A constable or accredited financial investigator must comply with a code of practice which is in operation under this section in the exercise of any function he has under this Chapter.

If a constable or accredited financial investigator fails to comply with any provision of such a code of practice he is not by reason only of that failure liable in any criminal or civil proceedings.

But the code of practice is admissible in evidence in such proceedings and a court may take account of any failure to comply with its provisions in determining any question in the proceedings.

The Department of Justice may from time to time revise a code previously brought into operation under this section; and the preceding provisions of this section apply to a revised code as they apply to the code as first prepared.