<Li> M1 connecting Belfast to the south and west, ending in Dungannon </Li> <Li> M12 connecting the M1 to Portadown </Li> <Li> M2 connecting Belfast to the north . An unconnected section of the M2 also by - passes Ballymena </Li> <Li> M22 connecting the M2 to near Randalstown </Li>

Why is northern ireland not part of great britain