In February 2015, Trott failed to win a title at the World Championships for the first time in her career, finishing second in both the team pursuit and omnium. The result was part of a poor Championships for Britain, with the team finishing without a gold for the first time since 2001. Trott moved to the new Matrix Fitness Vulpine team for 2015 as a lead rider, moving to the team in order to better combine her road and track cycling ambitions. After a road season in which her best result was 3rd in National Championships, Trott returned won three gold medals at the 2015 European Championships, in the team pursuit, scratch race and omnium. She followed this with gold medals in the scratch race and omnium at the 2016 World Championships in London, as well as a bronze in the team pursuit.