A passenger trying to get off a train at Oxford Circus was left with a cut on her head after being assaulted by a group of youths.
The victim was trying to get off when the group tried to get on through the same doors. Another passenger who tried to intervene was also assaulted and was left bruised.
The attack happened on around 12.15am on Sunday, 15 December 2013 on the northbound Bakerloo line platform.
Anyone with information should contact British Transport Police on Freefone 0800 40 50 40 quoting reference LUA/B10 08/01/14