Only journalist and broadcasters will be admitted.
The NAI's free Genealogy Advisory Service will not operate during the closure. It will resume on Monday 11 December.
Later in the month, the NAI will break with recent tradition by not opening between Christmas and New Year. Instead, the offices will be closed right across the festive season, from 12:30pm on Friday 22 December 2017 until it re-opens at 9:15am on Tuesday 2nd January 2018.