Top 5 Grand National jockeys according to Timeform. Which jockeys have the best record in the Grand National judged on the quality of their. How One For Arthur won the Grand National from Cause of Causes - plus find out what Scotland's first National winner since Rubstic in ; 2nd: Cause of Causes (), .. BBC Radio 5 live horse racing commentator. The Grand National is always a dramatic horse race. We look back at 5 of the most dramatic Grand National winners of all time.