Police are hunting a man after a sex attack on a teenage girl on a bus in west London.
A man moved seats to sit next to the victim, trapping her in the corner of the bus, before putting his hand on her thigh and touching her inappropriately.
When she got off the bus in Ealing, she was followed by a man who allegedly continued to harass her.
He finally fled when the victim threatened to call the police.
The alleged assault happened at around 7.50pm on Friday, September 9 on the route E10 bus.
The alleged victim, who is in her late teens, got on at Havern Green and off at Greenford Broadway.
Detectives are now hunting for the man, who is described as white, 5ft 5ins, grey-haired and in his late 30s to early 40s.
There have been no arrests and enquiries continue.
Anyone who recognises the man in the CCTV image released or has any information is asked to call DC Matt Poore at the Roads and Transport Policing Command via 101 or Crimestoppers anonymously on 0800 555 111 or visit crimestoppers-uk.org.
