Having been a part of the Great Britain set-up since she was aged in her early teens and still a pupil at Hulme Grammar School,[2] Green won a silver medal in the women's relay[3][4] and bronze in the team event at the 2019 European Junior Modern Pentathlon Championships in Drzonków, Poland.[4][5]
Later that year she returned to the Polish city and claimed bronze in both the team and mixed relay events as well as coming 11th in the individual competition.[6][7]
Stepping up into senior level, Green made her individual Modern Pentathlon World Cup debut at an event in Budapest, Hungary in March 2021.[8] At the same event she won a gold medal alongside Joe Choong in the mixed relay.[9]
In November 2021, again in Drzonków, Green was on top of the podium as she took gold in both the individual and team contests along with a bronze medal in the mixed relay at the 2021 European Under-24 Modern Pentathlon Championships.[10][11]
She won a gold medal in the women's team event at the 2022 World Modern Pentathlon Championships in Alexandria, Egypt, as well as placing fifth in the individual standings.[12][13]
In July 2023, Green won a bronze medal at the European Games in Poland which secured Great Britain a quota place for the 2024 Summer Olympics in Paris.[14][15][16][17]
A month later she won a silver medal in the women's team competition at the 2023 World Modern Pentathlon Championships held in Bath, England.[18]
Despite being responsible for obtaining one of the quota places, Green was not named in the Great Britain team for the Olympics with the places going to defending champion Kate French and 2023 World Championship bronze medalist Kerenza Bryson instead.[19][20]
At the 2025 World Modern Pentathlon Championships in Kaunas, Lithuania, she finished sixth in the individual event and won a silver medal in the team competition.[21]
