It was created in 2020 following the introduction of the regional Rachael Heyhoe Flint Trophy as the highest domestic competition in women's One Day cricket.

[2][4] This decision was not popular with some of the county teams who felt that the new competition had removed their representation in the top flight of women's cricket.

Though it was endorsed by the England and Wales Cricket Board (ECB), it was viewed as a breakaway tournament due to a negative perception of the ECB's way of administering women's cricket by reducing the number of teams from counties to regions.

[2] The South East Stars and Sunrisers regional teams agreed to release their contracted players to represent their counties in the Women's London Championship.

[2] Kent won the 2021 tournament, winning three of their four matches, with defending champions Surrey in second place.