That's a fantastic gesture to donate the prize money to three women's charities, and great choices.
Nia - that's the charity where Karen Ingala Smith is the Chief Executive - it provides services for women and children who've experienced domestic and sexual violence and is run entirely by and for women
Centre for Women's Justice, which IIRC is run by Harriet Wistrich, Julie Bindel's partner - so many great cases where they've helped get women out of prison, e.g. Sally Challen
Southall Black Sisters - long history of working with Black (Asian & Caribbean) women empowering them to escape poverty & violence