This appeal for witnesses was put out on the 10th October, may still be worth posting. The investigation doesn't seem to have progressed beyond this:
Following an investigation by detectives from the Met’s Serious Collision Investigation Unit (SCIU) six people were arrested in connection with the investigation.
Three men, aged [A] 45, [B] 24 and [C] 23 were arrested on suspicion of causing death by dangerous driving and failing to stop at the scene of a collision. They were subsequently released on bail pending further enquiries.
Two women and a man were arrested on suspicion of causing death by dangerous driving and failing to stop at the scene of a collision. They were later released with no further action.
This appeal for witnesses was put out on the 10th October, may still be worth posting. The investigation doesn't seem to have progressed beyond this:
https://news.met.police.uk/news/further-appeals-following-fatal-collision-in-whitechapel-489091