It has emerged the 24-year-old woman who was fatally shot in Kilburn on Saturday was a nursery teacher.
Sabrina Moss, who had a four-year-old son, was on a night out celebrating her birthday when she was killed.
Police have now arrested a second man in connection with her murder.
Another woman, who was also shot, is in a stable condition in hospital.
More top news
Detectives appealing for witnesses to a fatal accident have a released a picture of the 29-year-old victim.
Australian paramedics are being recruited to fill vacancies at the London Ambulance Service.
Brent Council is offering to cut business rates for firms that pay the London Living Wage.