Have just seen this on a facebook thread.
Women's Aid is the National Federation of women's refuges and has been providing this service seen they set it up in 1987!
Although they (were forced) to share it with Refuge in 2003, Refuge is just a member group.
I wonder what is behind this, particularly as it seems it isn't that long ago that Refuge was investigated by the Charity Commission.
www.womensaid.org.uk/update-regarding-the-national-domestic-violence-helpline/
(I very much doubt it has anything to do with trans issues, but much more to do with who has more political clout. Or that the Government like other funders think the corporate style is more worthy than those silly grass roots feminist organisations that hand on to autonomous working.)