In 1984, Kinch competed in the European Indoor Championships in Gothenburg, where she won a gold medal in the 60 m sprint in a time of 7.16 seconds.

Kinch was an outstanding talent, who seemed to have a brilliant future ahead of her, She earned selection for the 1984 Olympics at both 100 metres and long jump but was forced to withdraw because of injury and was never able to regain her former glory.

Kinch competed at the 1988 Olympic Games in Seoul as a member of the UK 4 x 100 metres relay quartet that reached the semi-finals.

In 1990, she won a European Championship bronze medal in the relay along with her teammates Stephanie Douglas, Simmone Jacobs and Paula Thomas.

In 1996, Kinch earned relay selection for the Olympic Games, but was forced to withdraw due to injury.