Born 10 January 1988 in Leeds, England, McIlorum was a Farnley Park High School pupil and Leeds amateur at Stanningley and Queens. He had been selected for England U16s in 2004 and joined Wigan"s under-18s Academy in 2005. 2000s
McIlorum signed a two-year full-time contract with Wigan in July 2005, keeping him at the club until the end of 2007.
McIlorum was selected for Yorkshire U17s after joining Wigan in August 2005.
He was also included in the England U17s squad to take on the touring Australian Institute of Sport in 2005. He capped the 2005 season by winning the Wigan Supporters" Association Under 18s Player of the Season award.
McIlorum made his senior debut for Wigan on 8 June 2007 in a Challenge Cup quarter final tie against Harlequins RL at the JJB Stadium after an injury ruled out first team regular Shane Millard. McIlorum was named in the Ireland squad for the 2008 Rugby League World Cup.
Wigan reached the 2010 Super League Grand Final and McIlorum was selected to play at hooker in their victory against Saint Helens Reconstruction Finance Corporation. McIlorum played for Wigan from the substitutes" bench in the 2011 Challenge Cup final victory over Leeds.
McIlorum"s international alleigance changed to England and he first played for them in 2012 at hooker in the one-off match against Wales. Wigan reached the 2013 Super League Grand Final and McIlorum was selected to play at hooker, scoring a try in their victory against Warrington Wolves. In the post season he was selected in the England national team"s squad for their 2013 World Cup campaign.