“Continuing as we are will not solve it – we need systemic, institutional reforms,” the statement continued. “The government and Metropolitan Police must undertake coordinated sustainable action to tackle violence against women and girls – on the streets, in the home, in the workplace, online and wherever else it may take place. Because enough is enough.”

The Metropolitan Police also released a statement to mark the anniversary, saying its “thoughts and deepest sympathies” were with the friends and family of the sisters.

“The level of service we provided was below the standard it should have been and no doubt compounded the distress felt by their loved ones,” the Met told the BBC. “We are sorry for the truly despicable actions of PCs Jaffer and Lewis. They are in prison because of it.

“Improving the culture and standards within the Met is a priority for us, as we seek to rebuild Londoners’ trust and confidence in their police service.”

Bibaa Henry and Nicole Smallman: hundreds join march to mark the anniversary of the sisters’ deaths