In the relay, she represented Great Britain at the 1988 Olympic Games in Seoul, South Korea,[1] while at the Commonwealth Games, she won a silver medal in Edinburgh 1986 and a gold medal in Auckland 1990.

In 1986, she represented England at the Commonwealth Games in Edinburgh, reaching the final of the 400 metres, finishing eighth in 53.97 secs, before teaming up with Jane Parry, Linda Keough and Kathy Cook, to win a silver medal in the 4x400 metres relay in 3:32.82.

In 1988, Piggford earned late selection for the 4 × 400 m relay squad for the 1988 Seoul Olympics.

The British quartet of Linda Keough, Jennifer Stoute, Piggford and Sally Gunnell, finished sixth in 3:26.89.

The British quartet went on to win a bronze medal in the final with Sally Gunnell replacing Piggford.