A woman had juice poured over her head before being knocked out with a glass bottle on the Tube, police said. Investigating officers are seeking witnesses to the incident earlier this month.
On December 2, shortly before 4pm, a woman - who would become the victim - was on a Central Line train when another woman sat beside her. Following an altercation in which the victim was punched, her hair was pulled and her face was scratched, other passengers stepped in.
However, the woman poured a bottle of juice over the victim, before knocking her out with a glass bottle.
In a statement, British Transport Police said: "Detectives investigating a serious assault onboard a Central Line train are today appealing for witnesses to come forward. At around 3.30pm on Monday 2 December, the victim was sat on a Central Line train between Shepherds Bush and Liverpool Street when another woman sat next to her.
"The victim and woman started arguing before the woman began to punch the victim in the head repeatedly, scratching her face and pulling her hair. Three members of the public restrained the woman and moved her away, however she returned to the victim and started to stamp on her feet.
"She then poured a bottle of juice over the victim before taking an empty glass bottle and smashing it over the head of the victim, causing her to lose consciousness. Were you one of the people who restrained the woman, or did you witness this incident and have information which could help the investigation?
"Anyone with information can contact British Transport Police by texting 61016 or calling 0800 40 50 40, quoting reference 41 of 26 December. Alternatively, you can contact Crimestoppers anonymously by calling 0800 555 111."
