More than 80 organisations pulled out of the UK government’s international LGBTQ conference due to be held in June after Prime Minister Boris Johnson dropped a plan to ban so-called conversion therapy for transgender people.

The government is wrong to “actively exclude” trans people from the ban, The LGBT+ Consortium, an umbrella body for groups in the UK, said on Monday. “We refuse to stand by and let this happen.”

Johnson’s office sparked a widespread backlash last week when it said it would drop a key Conservative Party pledge to legally outlaw conversion therapy, the practice of trying to change a person’s sexual orientation from homosexual or bisexual to heterosexual. ..