Hi Ginsy,
I can't comment on this much but didn't want to leave you without a reply. All I know is that to get free IVF for us as a lesbian couple under the new legislation we have to have 6 goes at IUI which is meant to be the equivalent of a straight couple trying for six months, so we are treated equally.
On this basis I would imagine it is six months of trying but maybe it depends on the PCT? I don't want to give you false hope and I would ask your PCT direct to confirm.