McKay turned professional in February 2002 in Glasgow, Scotland. In his debut McKay defeated experienced English journeyman Jimmy Steel with a points victory over four rounds.[1] McKay is a former holder of the Irish light heavyweight title which he won in November 2006 beating Michael Monaghan with a 10-round points win. In December 2007 he found Andy Lee for the Irish super middleweight title but lost in the 6th round. A year later McKay fought Darren Barker for the middleweight version of the Commonwealth title in Brentwood, Essex. He lost the fight after his corner pulled him out at the end of the 6th round.[citation needed]