He had played his entire professional career with the Wigan Warriors in the Super League, prior to his move to the South of France.

McIlorum was born 10 January 1988 in Leeds, West Yorkshire, England, and attended Farnley Park High School.

McIlorum made his senior début 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.

In 2010 Wigan made the 2010 Super League Grand Final, and McIlorum was selected to play as a hooker in the victory over St. Helens at Old Trafford.

[6] The following year McIlorum played for Wigan from the substitutes' bench in the 2011 Challenge Cup Final victory over the Leeds Rhinos at Wembley Stadium.

[9][10][11] Wigan reached the 2013 Super League Grand Final, and McIlorum was selected to play at hooker, scoring a try in their victory against the Warrington club at Old Trafford.

[14] In the 2016 World Club Series against Brisbane, McIlorum suffered a serious ankle injury, and did not play again for the rest of the 2016 season.