An exceptional junior, Fraser won six English Schools 200 m titles (as well as a silver medal for the 4 × 100 m at the 1990 World Junior Championships[1][2]) before turning to the 400 m in 1991 and becoming European Junior Champion at the distance the same year (also gaining a silver medal for the 4 × 100 m).[1][2] However, she didn't improve until 1996, when she began to concentrate on the 400 m seriously and qualified for British teams in the major outdoor championships between 1996 and 1999. However, it was at the Sydney Olympics in 2000 that she finally showed the potential she had had as a junior, when she clipped almost a second off her PB to finish fourth with a personal best time of 49.79 seconds, thanks in no small part to her training alongside Olympic champion Cathy Freeman for that season.
At the 2007 World Championships in Athletics, Fraser went as part of the 4 × 400 m relay squad. Despite not running in the final, she received a bronze medal, as she competed in the heats on the second leg.
In September 2009, she announced that she was going to leave athletics to return to working full-time at EDF Energy. Her final major race was the 400 m at the British Grand Prix at Gateshead, where she finished 7th with a time of 54.11 seconds.[1][2] However, she has continued to race for the Croydon Harriers, an athletics club based at the Croydon Sports Arena.[1][2][4]