The children’s hospital in London was named as one of the new child gender care centres in the wake of the closure of the Tavistock clinic.
Global Butterflies, a trans campaign group, reportedly held a talk with workers last year in which they told staff to stop using gendered language such as “guys” and “ladies”.
The Times reports that hospital staff were also given guides that said people could identify in “over 150 ways and increasing”.
Stephanie Davies-Arai, founder of the group Transgender Trend, which campaigns against the spread of trans ideology, told the paper: “Global Butterflies are another version of Stonewall. What they teach is ideology. A children’s hospital should not be talked to by ideologues it should be based only on research, evidence and hard facts.
“Organisations like Global Butterflies are attempting to stop a legitimate debate that is happening in the UK.”
A spokesperson for Great Ormond Street Hospital said: “We regularly invite external speakers to talk to staff about a wide range of issues. Event attendance is always optional and it’s made clear that the views expressed are those of the external speakers, not GOSH.”
It comes after parent groups called for the head of the Great Ormond Street Hospital Charity to quit over her public support for a controversial transgender activism campaign.
Louise Parkes was one of the high-profile signatories of a political pledge called Stand With Trans, an initiative that calls on charity leaders to sign up to demonstrate they are on “the right side of history”.
Ms Parkes, chief executive of the GOSH Charity, said she was backing the campaign “because I believe in equity for all”.
But Stephanie Davies-Arai, founder of Transgender Trend, a parent-led group concerned about the rise in children saying they are trans, claims Ms Parkes had made a “huge error of judgment”, adding that she “should resign”.