He was the first actor to play all three of Christine's loves in "The Phantom of the Opera": he has played Raoul and the Phantom on stage, and makes a cameo as Christine's father in The Phantom of the Opera (2004).
Became the youngest ever Phantom at age 28 in Andrew Lloyd Webber's Phantom of the Opera musical. (September 10, 2007 at Her Majesty's Theatre, London).
His entire part in The Phantom of the Opera (2004) is a picture of him in character and a single shot, lasting less than thirty seconds, of Gustave on his deathbed.
He is a close friend of Hadley Fraser. The two started Sheytoons, a folk rock band together in 2010.
His sons' names are Jaiden and Hadley. The youngest, Hadley, is named after Hadley Fraser.
Met his wife, an East Londoner, on a cruise ship.
Last name is pronounced "Karim-loo". (Karim is pronounced quickly and rhymes with 'Karen'/'Karyn' - 'Kar' as in 'CARE', and 'rim' with a short i vowel).
Won the 2011 Whatsonstage.com Award, The EMG Best Actor in a Musical, for his portrayal as the Phantom in "Love Never Dies". (February 20, 2011)
He and Hadley Fraser appeared in the 25th anniversary concerts of both "The Phantom of the Opera" and "Les Misérables".