1N.I.This Part of this Schedule applies where under the law of the Republic of Ireland corresponding to Part II of this Schedule a court issues a letter of request to the Lord Chief Justice of Northern Ireland for the taking of evidence in Northern Ireland from a witness specified in the letter of request for the purposes of the trial in the Republic of Ireland of an extra-territorial offence under the law of the Republic of Ireland, or the hearing of an appeal arising out of the trial of such an offence.