McGuigan left Oasis in 1999 and was replaced by bassist Andy Bell in the following year. Noel Gallagher claims he quit via fax and avoided phone calls from the Gallaghers in the following weeks. Though he eventually gave up trying to contact him by phone, Noel claims to bear no malice towards McGuigan.
He occasionally performs as a DJ. He declined to appear in the 2004 Definitely Maybe DVD, though a polite letter explaining his reasons for doing so appears as a hidden extra, along with a short segment with pundits giving their views on him.