Culture Secretary Lisa Nandy is preparing to warn the entertainment industry that the government will force it to strengthen safeguarding unless it acts itself, following allegations of sexual misconduct against David Walliams and the jailing of Russell Brand. She will deliver the message at a meeting with senior figures from broadcasting, film, publishing and entertainment next week.

The government is understood to be considering forcing companies to join the Creative Industries Independent Standards Authority (CIISA), the independent body set up to tackle bullying, harassment and discrimination across the creative industries. Membership of CIISA is currently voluntary, and ministers are said to be increasingly concerned that existing arrangements are failing to protect women and whistleblowers.

Walliams allegations and Brand conviction behind the move

The intervention follows a three-year investigation by The Guardian and ITV News into allegations against Walliams, the former Britain's Got Talent judge and bestselling children's author. Several women have accused him of sexual misconduct and abusing his position, including claims that he groomed teenagers. One woman has described an alleged encounter with him when she was 15 as sexual assault. Walliams denies all of the allegations and has previously said he is "not a sexual predator" and has not broken the law. The claims became public after he unsuccessfully sought a court order to prevent their publication.

The warning also follows the imprisonment of Russell Brand, who was jailed for ten and a half years after being found guilty of raping one woman and sexually assaulting three others. Speaking in the House of Commons, Ms Nandy told MPs she would meet representatives from across media, entertainment and sport next week. "If those protections are insufficient, the Government will not hesitate to take further action," she said.

Ministers target NDAs and BBC failings

Ministers have also signalled further restrictions on the use of non-disclosure agreements, which campaigners say have been used to silence victims. Women and equalities minister Bridget Phillipson has spoken in support of tightening the rules, and Zelda Perkins, founder of the campaign group Can't Buy My Silence, has urged the government to act.

Ms Nandy also criticised the BBC's record, telling MPs she was deeply frustrated by a succession of reviews into the behaviour of high-profile broadcasters, including the Dame Janet Smith review into Jimmy Savile and reviews into the conduct of Huw Edwards and Tim Westwood. Shadow culture secretary Rebecca Paul asked whether the government would use BBC charter negotiations to press the corporation to investigate workplace complaints and misconduct more effectively. Ms Nandy said she was summoning industry leaders to "draw a line" in the sand after a succession of high-profile sexual misconduct cases. Read The European's report on the planned crackdown and the account of her Commons statement.