Patterns of psychological abuse, such as dictating what a partner can wear, should be outlawed, according to campaigners.
Three groups want the Government to criminalise "coercive control" - patterns of abusive behaviour which cause psychological harm.
It can include being excessively jealous, isolating your partner from family and friends, controlling what they wear or deliberate sleep deprivation and threats.
The Home Office included the term "coercive control" in their definition of domestic violence last year, but they have to legislate against it.
Two women in the UK each week are killed by their partners and campaigners from Women's Aid, the Sara Charlton Charitable Foundation and stalking advice service Paladin said the most dangerous cases involve domestic violence, stalking and this type of control.
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The man, who was in his 30s, has not been identified, while several other people are believed to have suffered serious injuries.
The Olympian was one of several sports stars who opened up to the prince during an event for his mental health charity Heads Together.
There will be sunny spells, with temperatures peaking at 23 Celsius (73F). However, Northern Ireland will experience frequent showers.