He also oversaw the match in which Kirk Stevens compiled a maximum 147 break at the 1984 Wembley Masters.
Before becoming a Snooker referee worked as a London Underground driver.
In 1977, Smyth was instrumental in the formation of the Professional Referees' Association, and was PRA president at the time of his death in 2007.
He started refereeing in 1967.
He officiated in two World Snooker Championship finals, including the first to be held at the Crucible Theatre in 1977. The second came in 1982 when Alex Higgins won his second world title.