Norfolk Police has said that its uniformed officers will not be allowed to take part in this weekend's Norwich Pride.
It made the decision after a High Court ruling that another force had acted unlawfully by doing so.
Chris Balmer, Norfolk Constabulary's assistant chief constable, said that only officers on duty and who were directly involved in policing the event would be present for the parade on Saturday.
The announcement follows the ruling that the chief of Northumbria Police had “breached impartiality” by encouraging officers to take part at last year's pride march in Newcastle.
Mr Balmer said that the force had “taken time to reflect on the judgement and speak to our colleagues who feel affected by it”.
He added: “The judicial review was quite clear – uniformed officers taking part in a Pride march is a breach of the police duty of impartiality.
“We remain committed to serving all communities with fairness, respect, and professionalism, as well as providing and nurturing an inclusive workforce.”
The decision means that no uniformed officers or police staff wearing constabulary-branded clothing will be permitted to participate in the parade on Saturday.
Norfolk Police had been under growing pressure from a women's rights group to change its policy on officer involvement following the High Court verdict.
In a post on X, the Women's Rights Norfolk (WRN) had called on the force and its chief constable Paul Sanford to “start being grown ups and return to lawful impartiality”.
In subsequent posts, it accused the force of “ignoring the law on impartiality”.
The group has been critical of public sector organisations endorsing events and groups which promote gender ideology - the idea that people's self-declared gender identity should be given precedence over biological sex.
The group claims this leads to policies which are harmful and threatening to women, such as a loss of single sex spaces.
Ermine Amies, a spokeswoman for WRN, said: “Women’s safety, dignity, and legal protections are non-negotiable in ethical modern policing.
“The High Court judgment applies to all forces and confirms what the public rightly expects: Norfolk Police must be impartial, lawful, and professional.
“The court found that the Chief Constable of Northumbria Police breached her duty of impartiality by officers marching in Pride in uniform and branding vehicles displaying the Progress flag, a symbol tied to contested gender ideology that denies same-sex attraction and women's sex-based rights to safety, dignity, privacy and fairness.
“This ideology demands that self-declared gender identity is given precedence over sex.
"This is a position which is not shared by many of the people who live in Norfolk and undermines the core constitutional principle of impartial policing in public service."
