A spokesman for Ms Abbott insisted the Shadow Home Secretary was not aware of any connection between the organisers of the event and Action for Trans Health (ATH) when she agreed to be involved.
The controversial organisation, which believes birth certificates represent “violence against trans people” last year released a controversial manifesto outlining a number of demands for the treatment of those who consider themselves to be transgender.
One of these calls for “free, universal access to safe hormones & blockers at any age”.
The fundraiser was organised by left-wing Labour faction Momentum Hackney last month and a summary published on its webpage on May 29 states: “Diane Abbott MP laid out the case for the Labour Party being so vociferous in its defence of trans rights, and why we need unity across the Labour movement against all forms of reaction.
“On the day that Abbott announced Labour’s commitment to closing down Yarlswood detention centre and scrapping the ‘hostile environment’, she also spoke about how she was moved into action by the horrific treatment of LGBT women, and all women, at Yarlswood.
“All in all, with around 50 people in attendance, a great involving discussion and money raised for Action for Trans Health, the panellists, the organisers and those who attended the meeting, walked away with the feeling the meeting was successful in its attempts to provide a platform for trans solidarity.”
Stephanie Davies-Arai from Transgender Trend, a group which questions the ethics behind gender reassignment for children, said: ‘I’m shocked that Ms Abbott would support an extremist organisation that pushes for total autonomy for little children to take powerful hormones that can have permanent effects on their bodies.”
A spokesman for Ms Abbott said the MP had “no information that this event is either linked with or intended to raise money for Action for Trans Health”.
He stressed there was no indication that ATH would be represented and that “if any such fundraising took place, Ms Abbott was not aware of it”.
ATH’s manifesto, which was originally released by its Edinburgh branch, also demands an end to birth certificates and legal gender, the immediate release and pardon of all trans prisoners, and an end to NHS control over transgender patient appointments, hormones and surgery.
The document states: “Birth certificates are not just a violence against trans people, they are a material to the state’s oppression of ‘undocumented’ immigrants and asylum seekers.
“We demand hormones & blockers are made available over-the-counter and by free prescription upon request.
“There will be no clinics, and no authorities. We will conduct our own research, and experiment with our own bodies.
“We demand nothing less than the total abolition of the clinic, of psychiatry, and of the medical-industrial complex.”
In September of last year, ATH activists made headlines after clashing with Trans-Exclusionary Radical Feminists (TERFS), who believe only women born with female genitals can be classified as such.