Katie started skiing when she was six years old with her sister Molly at the Sheffield Ski Village, where they later joined Sharks Ski Club.

Katie became the first British female skier to win a medal in a World Cup event for 19 years when she finished second in the Slopestyle competition in Silvaplana in February 2013. In the 2014 Sochi Winter Olympics she came 7th in the skiing Slopestyle final, after qualifying in 3rd.

After the Olympics she won a gold medal in Slopestyle at the 2014 Junior World Championships in Valmalenco, Italy. In 2015, she became the first British female competitor to win a World Championship medal in freestyle skiing when she took a silver in the Slopestyle event at the Freestyle Ski and Snowboarding World Championships.