Former Scottish boxer who was a WBC and The Ring Lightweight Champion from April 1979-June 1981.
His first professional fight was the knockout of Santos Martins on October 30, 1968.
He became a commentator on ITV's The Big Fight Live and moved to Sky Sports in 1996.
His daughter Michelle Watt became a TV presenter.
He took the WBC Lightweight title previously vacated by Roberto Duran.