An appeal has been launched after a woman travelling with two small children was reportedly slapped, punched and kicked at London Bridge station.
The incident happened in a passageway leading to the Jubilee Line platforms at 5pm on Wednesday December 12.
The victim suffered bruising in the attack.
Police said they believe the woman pictured in this CCTV image may have information to help them with their investigations.
Anyone who recognises her or who has any information about the alleged assault should contact British Transport Police by texting 61016 or calling 0800 40 50 40, quoting reference number 438 of 12/12/18.
Alternatively Crimestoppers can be contacted completely anonymously on 0800 555 111.