The husband of special police constable Nisha Patel-Nasri has been remanded in custody charged with her murder.
The couple were married for three years
Fadi Nasri, 33, was arrested on Tuesday morning over his wife's fatal stabbing, which happened outside their home in Wembley, north-west London, last May.
Mr Nasri and Roger Lesley, 37, of Bells Hill, Barnet, who is also charged with murder, both appeared before West London Magistrates' Court on Thursday.
Both men have been remanded in custody until 16 March at the Old Bailey.
There was no application for bail.
Two other men have previously been charged with murdering Mrs Patel-Nasri.
Jason Jones, 35, of Hathaway Crescent, and 40-year-old Tony Emmanuel, of Clements Road, East Ham, both east London, are also due to appear at the Old Bailey on 16 March.
Mrs Patel-Nasri, a hairdresser, had been a special constable for three-and-a-half years.
She and her husband had been celebrating their third wedding anniversary on 11 May, the night of the attack.
The 29-year-old died from a single stab wound to the upper leg.