In the 19th century, crimes the violence of a man towards his wife was seen as personal business. This attitude changed as women got the vote after WW1, and women campaigned for equal rights in the 1960s.
The Domestic Violence Act 1976 gave victims the right to ask for an injunction against a violent partner.
In 1991 the courts ruled that it was possible to prosecute a man for rape within marriage.
In 2014, controlling and coercive behaviour towards a partner was made a crime.
Despite this, it is the still the case that two women a week in the UK are killed by their current or former partner.