As a women only service, SARSVL does not work with transgender men or boys
And they also say this:
We are a proudly trans inclusive organisation and we recognise that transgender women and girls are female and have the right to self-identify as such in accordance with the Equality Act (2010).
Transgender women are welcome and encouraged to seek support from SARSVL and to deliver our services as volunteers or employees.
And they’re lying about the Equality Act 2010 - it says nothing of the sort about people identifying as something they’re not.