He has attended every Olympic Games since Mexico City in 1968, 13 in all, as a coach to National Teams.
After finishing 4th in the 1970 Commonwealth Games and running the fastest season time in 1971, he was not a big favourite for the 1972 Summer Olympics in Munich, having limited competition experience.
Nevertheless, he won the final there, running the inside lane, setting a world record time of 47.82 seconds.
Head coach great Britain Team, Atlanta Olympic Games 1996.
Head coach, UK Athletics Regional Performance Centre at the University of Bath from 1998 to date.
Since 1998, 14 athletes who have trained at the Bath Regional Performance Centre have won 41 medals at major championships at Commonwealth, European, World and Olympic levels.
He was appointed Officer of the Order of the British Empire (OBE) in the 2012 Birthday Honours for services to athletics.