In 2018, the
England and Wales Cricket Board (ECB) announced the launch of
The Hundred in 2020, which would supersede the existing premier women's T20 cricket tournament, the
Women's Cricket Super League. To accompany The Hundred, the ECB announced a plan to launch a new 'regional elite domestic structure for women's cricket', which would include the awarding of 40 new full-time professional contracts for non-England players. These plans were put on hold due to the
COVID-19 pandemic, but the Rachael Heyhoe Flint Trophy was eventually scheduled to begin in August 2020, with six new teams competing, alongside two teams carried over from the WCSL,
Western Storm and
Southern Vipers. The trophy was named after former
England player
Rachael Heyhoe Flint, and was intended to be a one-off, in light of the pandemic. In
2022, the Vipers and Diamonds once again reached the final, but this time the Northern Diamonds won by two runs, claiming their first title. Ahead of the 2023 season, it was announced that the tournament was expanding, with teams now playing each other team home and away. Southern Vipers won the tournament, their third title, beating
The Blaze in the 2023 final.
Sunrisers defeated
South East Stars in the 2024 final. 2024 was the final edition of the Rachael Heyhoe Flint Trophy. The ECB reversed the regionalised structure of the competition and replaced it with a new
Women's One-Day Cup, using the county structure. ==Teams==