Greig is from Cardenden, Fife in Scotland. He started learning at the age of 7 with local band Bowhill and Seafield Novice juvenile. In 2003, aged 14 he moved to Dysart and Dundonald. Greig moved to Boghall and Bathgate in the 2008 season having 2 years with the band. Greig joined the ranks of SFU pipeband in 2014.
Greig is a regular winner around the Scottish solo circuit.