18A civilian offence for which the person was convicted in Scotland, Northern Ireland or a member State other than the United Kingdom and which, if committed in England and Wales at the time of the conviction, would have constituted an offence specified in Part 1 of this Schedule.
19A member State service offence which, if committed in England and Wales at the time of the conviction, would have constituted an offence specified in Part 1 of this Schedule.
20In this Part of this Schedule—
“civilian offence” means an offence other than an offence described in Part 2 of this Schedule or a member State service offence;
“member State service offence” means an offence which was the subject of proceedings under the law of a member State, other than the United Kingdom, governing all or any of the naval, military or air forces of that State.