Police are searching for a woman who allegedly sexually assaulted another female onboard a Jubilee line tube train from Bond Street to Baker Street.
The attack occurred at around 7.15pm on 6 October, as the victim took a seat, according to British Transport Police.
The victim promptly got up and moved across the carriage, upon which the other woman was racially abusive to her before kicking her on the leg and continuing to be abusive as she left the train at Baker Street.
Officers believe the woman pictured in this CCTV image may have information which could help their investigation.
Anyone who recognises her, or witnessed the incident, should contact BTP by texting 61016 or calling 0800 40 50 40.
Crimestoppers can also be contacted anonymously on 0800 555 111.