A teenage girl accused of attacking a 35-year-old woman on a route 427 bus towards Hayes , has handed herself in to police after a CCTV appeal.
A Metropolitan Police spokesperson said: "The suspect handed herself in on Wednesday, February 3, at a west London police station as a result of the appeal.
"She has been bailed to appear at a west London police station pending CPS decision."
Police released CCTV images to appeal for information about two separate bus attacks on the same day, October 4 2015.
The female suspect boarded with a group of people at Hillingdon Hill and began to argue with the driver.
The victim complained about the suspect holding up the bus, at which point the suspect grabbed the victim's hair and punched her in the head.
Fellow passengers intervened and restrained the girl whilst the victim got off the bus.
However, as she made her way to a nearby pub, to take refuge, she was followed by the group and the same girl threw a bottle at her, causing a cut to her face.
The London Ambulance Service attended and the woman was taken to Hillingdon Hospital , where her wound was stitched. She was released later that day.
Search continues for suspect in separate incident
Police are still searching for a male suspect for an unlinked serious bus assault carried out on the same day.
A 34-year-old man was repeatedly punched while travelling on a Route N207 bus on Uxbridge Road towards Hayes , leaving him unconscious and with limited vision for weeks after the incident, in the early hours of October 4 2015.
The suspect is described as a white man, aged between 20 and 25, of slim build, with short curly hair and a scruffy beard.
The suspect fled before police arrived. The London Ambulance Service attended and the victim was taken to Ealing Hospital for treatment. He was discharged later that day.
Anyone who has any information about either incident, is urged to contact Detective Constable Alastair Middleton on 07909 877121 or Crimestoppers anonymously on 0800 555111.