He became known to audiences as a judge on the television singing competition The X Factor. He won the second season of The X Factor with Shayne Ward in 2005.
He appeared on several reality series, including You're a Star, Popstars, and Britain's Got Talent.
He began managing Aston Merrygold's band, JLS, in 2009.
He managed some of Ireland's most successful pop performers, including Boyzone and Johnny Logan.
He married Caroline Flack in September 2012.