In 1980, the British swimmer, Duncan Goodhew, faced a moral dilemma over whether to compete in the Moscow Olympics, which were being boycotted by the USA.

In the end, he decided to compete and won Gold in the 100m breastroke.

For Witness, David Prest hears from Duncan Goodhew and other British athletes at the 1980 games.

PHOTO: Hulton Archive/Getty Images