In 1986 the UK government ratified the UN Convention on the Elimination of all Forms of Discrimination against Women (CEDAW). It gives rights to UK women & obligates government to advance women's lives, recognising past inequalities & remedying them. Its provisions must become part of domestic law.
Video and other materials: https://www.engender.org.uk/content/cedaw/
CEDAW Committee: https://www.ohchr.org/en/hrbodies/cedaw/pages/cedawindex.aspx