Jennifer and John Nicks competed initially as singles skaters but agreed to train together in pair skating upon the request of the British association, which promised to support them. They made their first Olympic appearance at the 1948 Winter Olympics, where they finished 8th. The pair won the first of their four World medals, silver, at the 1950 World Championships. They won World bronze the next two seasons and competed at their second Olympics in 1952, where they finished 4th. The pair won gold at the 1953 World Championships in Davos, Switzerland. They retired from competition after the event.