"It is very difficult to find examples of Sex Matters campaigning on issues which do not relate to gender identity or matters related to the so-called trans "debate". "
It's a valid point worth mentioning and you can say the same for FWS and JK Rowling. It's almost entirely about trans people and complaining about pride flags and attacking any person or org who are LGBT supportive and/or refuse to say exactly what gender critical people want them to say.
Women really do face issues and some feminist groups in Britain have decided this is what they will spend all their time, funds and resources on. Just a few days ago it was all about a wildlife bird charity organising a nature walk in Bedfordshire.
Speaking of FWS, are they still keeping a digital database of the personal details of trans women who play sport? Or was that plan quietly dropped after public backlash who found it very stalker-ish?