Porter won a bronze medal in the 100 m hurdles at the 2013 World Championships. In 2014, she won a silver medal representing England at the Commonwealth Games. Later in 2014 she took her first major title, a gold medal at the European Championships, becoming the first British woman to win a European title in the event. Her personal best of 12.51 is the current British record. She is also a two-time medallist over 60 m hurdles at the World Indoor Championships.