Newton suffered a 3–0 first round exit in the 2008 World Championship to qualifier Jamie Caven. He won the Wildcard Qualifier for the 2008 Grand Slam of Darts, beating Colin McGarry in the final. He was drawn into Group F with Terry Jenkins, Colin Lloyd and American Darin Young where Newton defeated Lloyd and Young in his first two games to stand a great chance of qualifying for the knockout stages. However, Newton would go on to lose to Jenkins 0–5 and Young beat Lloyd to pip him to second place and knock Newton out.