A Transport for London worker was racially abused and chased at a station after telling a customer he could not board a train with his bicycle.
After being told he could not board the train, the suspect allegedly racially abused the member of staff and threatened him with harm.
He is also said to have chased the employee with a bottle but slipped on its contents during the pursuit.
Officers were called to the station in south east London just after 5.30pm on May 16.
A BTP spokesman said: “Officers would like to speak to the man in the image who may have information that could help their investigation.”
Anyone who recognises the man in the image or has information should text BTP on 61016 or by calling 0800 40 50 40, quoting reference number 241 of 16/05/20.
Alternatively, call Crimestoppers anonymously on 0800 555 111.