Sturgess turned professional after the 1988 Olympics. Among his professional teams was ADR, where he was a team-mate of Greg LeMond. He became celebrated for his showmanship on the bike; rather than maintaining an even pace as was the conventional tactic, he would hold back until the final lap and kick hard. In his World Championship win in 1989, where he trailed Dean Woods by over a second going into the last lap, he employed this tactic and crossed the finish line 1.66 seconds ahead of his rival. He won the British National Individual Pursuit Championships professional event three times in 1989, 1990 and 1991. Disillusioned with the sport, in part due to drug-taking in the peloton, he had interrupted his career around 1993, when he graduated in English literature from Loughborough University and moved with his partner to Sydney, Australia. In Australia, he resumed competing, while working as a sports journal editor, and later returned to England. He finally retired in 2000, after winning a silver medal at the 1998 Commonwealth Games as part of the England team pursuit squad alongside a young Bradley Wiggins, and worked as a wine maker and wine educator near Sydney, winning national awards for his work. According to Sturgess, the immediate reason for his retirement was a dispute with British Cycling's management regarding money, however he later identified the falling out as a symptom of a then-undiagnosed case of bipolar disorder, which contributed to the break-up of his two marriages, problems with alcoholism, and a suicide attempt.
Post-cycling career
Sturgess returned to the UK in 2013, and has since involved himself with coaching. In 2014 he returned to competition, winning the League of Veteran Racing Cyclists time trial championship in September of that year. In May 2016 he joined the Metaltek-Kuota team in a dual role as a rider in veterans' races and also as the team's directeur sportif. After guiding Metaltek rider Daniel Fleeman in the 2017 Rutland–Melton International CiCLE Classic, in October of that year Sturgess was announced as team manager with : he left the team one year later.
Memoirs
Colin is currently working with an unnamed publisher on his memoirs from his time in the pro peloton. The working title for the work is "From Leicester's Track to Steffi's crack - The Story of Cycling's Greatest Ever Colin". Publication is expected in time for Christmas 2020.