International career
She has represented Great Britain since 2012 having represented the country at the under-16, 18 and 20 levels and competing at the 2011 FIBA Europe Under-20 Championship held in Serbia.
She was named in the British team for the women's basketball tournament at the 2012 Summer Olympics in London, having been fast-tracked into the senior side from the under-20s. She averaged 4.8 points, 4 rebounds, 1 assist, 1.2 blocks, and 1 steal in 19.2 minutes per game. GB went 0-5 and failed to qualify from their group.
Her selection for the Olympics came after a 12-month period in which she was unable to play for the Harvard Crimson women's basketball team due to the National Collegiate Athletic Association (NCAA) declaring her ineligible. Fagbenle had taken the General Certificate of Secondary Education (GCSE) exam whilst at school in the UK and NCAA rules say that an athlete must be enrolled in college within two years of sitting for the exam; Fagbenle took an additional year to graduate from high school because she repeated a year after moving to the United States.
Since her debut, Fagbenle has represented Great Britain at several major FIBA tournaments including the 2015, 2023 and 2025 Women's EuroBasket finals and the 2020 Olympic qualification tournament.
She was a key part of the GB team which reached the semi-finals of the 2019 EuroBasket, averaging a tournament-best 20.9 points and earning selection for the All-Star Five team of the tournament .
Since 2025, she has been Great Britain's captain.
