A second man has been charged with the murder of Special Constable Nisha Patel-Nasri.
Doorman Jason Jones, 35, was charged with the murder of the 29-year-old special constable, who was stabbed to death outside her home in Wembley, north west London, last May.
Jones, from Hathaway Crescent, Manor Park, east London, will appear at West London Magistrates' Court on Tuesday, police said.
He is the second man to be charged with the young woman's murder, after 40-year-old Tony Emmanuel, of Clements Road, East Ham, east London, was arrested and charged in December.
Emmanuel is in custody and due to appear at the Old Bailey on March 16.
A third man remains on bail pending further inquiries, the Metropolitan Police said.
Mrs Patel-Nasri died after being stabbed in the leg by an attacker outside her home in Sudbury Avenue, Wembley, north west London, on May 11.
It is still unclear whether she went outside in her nightdress that night to investigate a disturbance or whether she found someone in her house.
She was killed with a distinctive 30cm (11.8-inch) John Lewis Evolution cook's knife which was part of a block set that was missing from her kitchen after the attack and was later recovered by police.
