Officers from the Met’s Roads and Transport Policing Command (RTPC) are investigating a series of sexual assaults on buses across Brent.
As part of the investigation, a CCTV still of the man police would like to speak to has been issued in a bid to identify him.
The first incident happened on Saturday, 2 July at around 02:00hrs on a N18 bus.
A 27-year-old woman was travelling on the bus and fell asleep. She was woken by an unknown man who was sitting next to her, touching her.
The victim pushed the man away before getting off the bus and calling police.
Three similar incidents occurred on route 226 buses across Brent between 17 July and 21 September.
On 17 July the victim, a 21-year-old woman, boarded the bus at around 09:00hrs. The suspect came and sat next to her and began touching her leg. The victim got off the bus in Acton Lane, NW10 and called police.
The next incident happened at approximately 15:10hrs on 8 August. A 27-year-old woman was sitting on the bus when the suspect came and sat next to her. He began touching himself before the victim got up and left the bus in High Street, NW10.
The third incident occurred on a 21 September at around 17:00hrs. The victim, a 31-year-old woman, was approached by the suspect as she sat on the bus. The man sat next to her and touched her before he was challenged by the woman. The suspect got up and left the bus at Park Royal station.
Following police investigation, officers believe all the other offences was carried out by the same man.
The man is described as of Middle Eastern appearance, about 30-35-years-old, 5ft 7inches tall and of slim build.
Anyone who recognises the man in the CCTV or who has information that could assist the investigation is asked to contact Detective Constable Annie Garrard or Detective Constable Teresa Moore from the RPTC on 101. Alternatively, contact Crimestoppers on 0800 555 111 if you wish to remain anonymous.