It’s currently non-statutory, which relies on witnesses taking part voluntarily.
Streatham MP Bell Ribeiro-Addy wants it to become statutory, which will give it the power to issue summons and take evidence on oath.
She says that it’s currently “insufficient” in its attempt to restore women’s trust in the police and justice system.
The Home Secretary hasn’t ruled out moving it to a statutory basis, and says the current model will “give her family closure as quickly as possible”.