Police are appealing for information after an assault at London Bridge tube station and in particular officers would like to trace a member of the public who intervened.
At around 8.50am on Friday 2 February a man pushed through the ticket barriers and, when challenged, assaulted a member of staff.
A member of the public intervened and the suspect then threatened him. Officers would like to speak to the member of the public as he may have key evidence which could help the investigation.
The suspect then boarded a train on the eastbound Jubilee line platform.
The member of staff boarded the train and asked the suspect to leave and was assaulted.
The suspect was stopped by officers and racially abused them.
"I would like to speak to any witnesses who saw what happened, and in particular I'd like to trace the members of the public who intervened," said PC Emma Martin.
"The station was busy at the time of the incident and I believe members of the public saw these staff members being assaulted. If you have any information, please contact me as soon as possible."
If you have any information, please call BTP on 0800 40 50 40 or text 61016, quoting reference number 141 of 2/2/18.