Several England players have moved teams ahead of the 2018 Kia Super League (KSL). Sarah Taylor has left Lancashire Lightning for Surrey Stars, with Alex Hartley going the other way, while Tammy Beaumont moves to Southern Vipers from Surrey.
The changes are overseen by the ECB and aimed at keeping a balance between the six sides, ahead of the third edition of the T20 competition. Each of the teams will still be able to recruit their own overseas players.
"The latest player movements are to ensure the best balance between the six sides and to maintain a fair and competitive competition with the over-arching principle of trying to ensure a best versus best competition," KSL general manager Jo Kirk said.
"We want the KSL to continue to go from strength to strength in its third year. Attendances rose by 44% last year and we're looking forward to even more fans attending games this summer, hopefully culminating in a sold-out Finals Day down in Hove."
This year's KSL begins on July 22 and features an expanded group stage, with the teams now playing each other twice. The top three will then go on to Finals Day at Hove on Bank Holiday Monday, August 27.