Confessed to Pat Kenny on Irish TV, "The Late Late Show" (1962), that one of his guilty pleasures was sifting through dumpsters in search of discarded "treasures".
Attended Sherborne School for boys from 1962-1966.
Has two sons, Samuel James (born on 16 September 1978) and Maximilian Paul (born on 17 October 1985).
Won Broadway's 1984 Tony Award as Best Actor (Play) for Tom Stoppard's "The Real Thing."
Won the 1984 Tony Award (New York City) for Actor in a Drama for "The Real Thing".
In 1996, he became the fourteenth performer to win the Triple Crown of acting. Oscar: Best Actor, Reversal of Fortune (1990), Tony: Best Actor-Play, "The Real Thing" (1984) and Emmy: Best Voice-Over Performance, "The Great War and the Shaping of the 20th Century" (1996).
At the 1990 Oscars, Irons concluded his acceptance speech for best actor in Reversal of Fortune (1990) by thanking "David". The "David" was David Cronenberg, who directed Irons the previous year in Dead Ringers (1988).
One of the first celebrities to wear the recently created Red Ribbon, supporting the fight against AIDS (1991).
After being ticketed in England for driving 97 mph. on his BMW motorcycle and being charged with speeding and fined $225.00, he had his motorcycle license suspended for three months (1 June 1995).
He has twice played characters with the same first and last name. The first in Lolita (1997) (Humbert Humbert) and second in And Now... Ladies and Gentlemen... (2002) (Valentin Valentin).
In 1998 he was named as a major donor to the Labour Party.
Helped to financially Sponser British Character Actor Stephen Manwaring whilst Stephen was at The Italia Conti Academy of Theatre Arts in 1999-2002.
Member of jury at the Cannes Film Festival in 2000
In 2003, he appeared in a Comic Relief sketch entitled "Harry Potter and the Secret Chamberpot of Azerbaijan". Irons played "Severus Snape", a character played in the films by Alan Rickman. Irons and Rickman play brothers in the "Die Hard" films.
In 2004 he declared his support for the Countryside Alliance.
President of the jury at 2007 Sarajevo Film Festival.