Until his retirement in 2019, Aidan McCormick was employed by the Northern Ireland Education Authority. Previously he was a teacher of science and careers education at post primary level. He has been a blood cancer patient for twelve years.

Aidan is Chairperson of NI Cancer Research Consumer Forum (NICRCF) and a Member of Queens University Belfast PPI Network. He is an Executive Committee Member of NI Cancer Trials Network (NICTN) and Patient Advocate Member of the All-Island Cancer Research Institute (AICRI). Aidan is also a Member of the Cancer Consortium Implementation Group. He is a Governor of the Southern Regional College.