At the 2013 European Artistic Gymnastics Championships in Moscow Harrold qualified to the individual all-around, uneven bars, and balance beam finals. In the all-around final she finished 8th with a total score of 54.633, becoming the first British woman ever to produce a top-10 performance in an all-around European Championships final. In the balance beam final she finished 6th after a solid performance which earned her a 13.633. She qualified 5th into the uneven bars final with a score of 14.133 but fell in the final, finishing 8th with a score of 12.900.