I think the pushback in the UK and the successes that have been achieved so far are down to a mixture of different people - Most of the push seems to have come from women and women's groups but they are not all radfem by any means. Women's Place UK is a socialist feminist organisations, Fair Play For Women isn't particularly aligned to any particular feminist ideology as far as I am aware, Posie Parker doesn't even call herself a feminist - That's just a few groups off the top of my head and they will all have some kind of link with some radfems somewhere along the line (eg have invited a radfem to speak at an event, have radfem supporters) but it is definitely not just radfems behind this (although I bet they'll try to take the credit!). A lot of it is just ordinary women who think this is ridiculous and are taking a stand.