58 year old Ina Rodrigues (above) was crossing Talgarth Road when she was struck on the 16th of January shortly after 6pm.
She was taken to hospital for treatment but died five days later.
The moped did not stop at the scene and police have released footage of the moment the vehicle was abandoned, and the passengers fled.
There has been no arrest and enquiries continue.
Anyone who witnessed the collision or who has information that could identify the people on the moped is asked to call 101 (24 hours) or the Serious Collision Investigation Unit witness line on 020 8543 5157 – please quote 6001718/24.
You can also provide information anonymously to the independent charity Crimestoppers on 0800 555 111.