A professional since 1992, Hull came to prominence during the 2001–02 season, as he reached the last 16 of the 2001 UK Championship, and later qualified for the 2002 World Championship, knocking out Steve Davis in the final qualifying round; in the first round proper, he lost 6–10 to Graeme Dott. These results allowed Hull to get into the world top 32 at the end of the next season.