Wigg went to school at the John Hampden School in High Wycombe. Leaving in 1977 after taking his O'levels.[4] After relocating with his family several times as a child, he gained a scholarship to Woodbridge School in Suffolk, where he and his brother began their interest in motorcycle racing, attending Ipswich Witches meetings at Foxhall and riding in grasstrack competitions.[5]
After a mid table finish in 1984 he was part of the Oxford team that won the league and cup double during a 1985 British League season.[11] Also in 1985, he became the second British World Longtrack Champion (Michael Lee was the first in 1981) and went on to win the title a further four times.[5] He was the most successful British grasstrack and longtrack rider ever.[5]
Wigg while riding in Oxford, met his wife to be, Charlie, and after a few years together they had two children.[5] In 1986, Wigg was part of the Oxford team that won a second consecutive league and cup double during the 1986 British League season.[11]
During his career, Wigg was a frequent visitor to Australia and always enjoyed success on the larger Showground tracks down under such as the Brisbane Exhibition Ground, the 510 metres (560 yd) Wayville Showground in Adelaide, the Claremont Speedway in Perth, and the Melbourne Showgrounds. During his time riding in both Australia and New Zealand, Wigg won the Australian Long track Grand Prix in 1990, 1994 and 1995, as well as the New Zealand Long track Grand Prix in 1994.
Wigg was also famous for his bright green leathers and bikes, being nicknamed "The Lean Green Racing Machine". He rode in 65 meetings for England.[5]
Death
After suffering epileptic seizures in November 1998 and January 1999, which were originally attributed to head trauma from racing crashes,[15] he was diagnosed with a brain tumour, and had surgery to remove it in May 1999.[5][16] After recovering, he moved with his family to Gold Coast, Queensland, but after falling ill again in February 2000, returned to the UK for further surgery after discovering that the tumour had regrown.[5] Wigg died on 15 November 2000 at the age of 40.