In recent years, the world of sport has seen a progressive shift for female athletes. Stars such as Ronda Rousey, Serena Williams and Jessica Ennis-Hill have proved to be game-changers, ushering women’s sport into a period of greater acceptance, empowerment, and credibility.

The world of sports-entertainment – WWE’s self-coined brand of professional wrestling – has been enjoying a similarly progressive movement, dubbed the “women’s revolution.”

“Women,” so three-time Women’s Champion Sasha Banks tells me, “are taking over the world.”

Now, the female wrestlers – including Sasha and on-screen rival Charlotte Flair, the current Women’s Champion from WWE’s Monday night show Raw – are the subject of an all-new documentary, Smashing Glass Ceilings: The Women of WWE, which launches on All 4 today.