Detectives wish to speak with two women after a Tube passenger was hit over the head with a wine bottle, leaving her with serious head injuries.
The shocking assault, which took place on the Northern Line, happened after midnight and police have released CCTV footage that shows two women, one clutching a bottle.
At around 12:30am on 17 June, the victim was on her way home when two women sat opposite her and accused her of staring at them.
It is alleged the two women then became aggressive and one of them pounced on her, cracking a wine bottle over her head.
The victim was left shaken by the attack and suffered a deep cut to the side of her forehead.
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The two suspects were then spotted getting off the train at Golders Green Underground Station.
British Transport Police officers have now shared CCTV images of two women they believe may be able to assist their investigation.
A BTP spokesperson said: "At around 12.30am on 17 June, the victim was travelling home on the service when two women sat opposite her accused her of staring at them.
"They then became aggressive towards her before one of the women approached the victim and hit her on the head with the wine bottle she was carrying.
"The victim sustained a deep cut to the side of her forehead as a result of the attack.
"The two women got off the Tube at Golders Green Underground station.
"Officers believe those in the CCTV images may have information which could help their investigation.
"If you recognise them, or have any information, please contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 2100043618.
"Alternatively, you can contact Crimestoppers anonymously on 0800 555 111."
