The event will take place at Exeter University on 30 June to 3 July 2016 across three days and nights. Other companies that have confirmed their attendance include CGI, EMC, Atkins, and Equiniti.
During the challenge 70 teams, each consisting of six people, will work under pressure to solve puzzles and decipher codes.
Andy Knee, managing director of mass participation sports at IMG, said: "We are delighted that United Airlines has agreed to become our Presenting Partner for the UK Challenge. Like the UK Challenge, United is a brand that prides itself on delivering the very best experience for its customers. We look forward to partnering with United to make the 2016 UK Challenge our biggest and best yet."
• For more breaking news, as well as in-depth features and case studies, sign up to C&IT Magazine's daily Newstracker here