
62-year-old Julia Burns passed away in hospital in February, five months after she was in collision with the bike in Elmwood Avenue.
The rider left the scene before officers arrived.
A 19-year-old man was arrested on suspicion of causing death by dangerous driving but was released on bail.
Detective Constable Sarah Royle, from the Met’s Serious Collision Investigation Unit, said: “Our thoughts are with the loved ones of Julia, who have endured so much throughout this difficult time.
“Investigators have been working continuously on this incident for the past year, to try and piece together the circumstances that sadly led to Julia’s death.
“Were you in the area this time last year and recall seeing or hearing the incident? Perhaps you saw something suspicious in the moments afterwards?
“We urge you to come forward and let us know, even the smallest piece of information could make a difference.”
Please contact the police on 101 or online, using the crime reference number 01/902272/24. Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.



