Harry Potter stars Rupert Grint, Emma Watson and Daniel Radcliffe have all criticised JK Rowling over transgender issues

The play, which was written by queer-identifying Hollywood scriptwriter Joshua Kaplan, tells the story of a fictional intervention staged for Rowling by the stars of the Harry Potter franchise, Watson, Grint and Radcliffe.

The three actors publicly denounced Rowling in 2020 when she first raised concerns about the spread of gender ideology, the belief that gender is unfixed and changes according to how people self-identify.

The work was initially titled TERF C***, with TERF standing for trans-exclusionary radical feminist, a term which has been deployed pejoratively against women who have opposed trans ideology.

It is understood that 30 actresses have turned down the role of Rowling in the play, and 60 have refused the part of Watson, while agencies representing aspiring female stars have been nervous to put their clients forward for the project.

There is some suggestion that the actress may have ideological misgivings about the play, or be concerned about a potential backlash.

It has been suggested by producers that some actresses may not want to appear in a play critiquing Rowling and ruin their chances of appearing in the lucrative new Harry Potter TV series on the Max streaming service.

Rowling is acting as executive producer for the series, and will be involved in key decision-making.

Mr Church-Woods said: “We’ve had agents reluctant to put names forward, I suspect, because they do not want to damage their clients chances of landing roles on the new Potter TV series.”

Writer Mr Kaplan has insisted that his play does not carry a set message, and is more about “relationships and how Rowling’s opinions evolved” rather than a work “interrogating the substance of her opinions”.

TERF plays the Sir Ian McKellen Theatre from August 2 to 25.