In March Simm competed at the English Championships where she placed second in the all-around behind Amelie Morgan. She was later selected to compete at the 2019 European Championships alongside Ellie Downie, Alice Kinsella, and Amelie Morgan. At the British Championships Simm placed second in the all-around behind Downie. She pulled out of event finals due to injury. She later found out that she fractured her foot and had to pull out of the European Championships.