Met police have released an image of a man they wish to speak to after two women were assaulted in Northolt.
Police were called to Church Road, UB5 at 9:28am on Wednesday, 10 August following reports that a woman had been the victim of a sexual assault.
The are was cordoned off for forensic investigation.
Later the same day, a second woman came forward who alleged that she had been raped in the same underpass at midnight the same day.
Details of the alleged assaults took place in the nearby underpass at the White Hart roundabout shortly after 5:00am.
Detective Constable Stephen Gayfer said: “We are doing all we can to support these women and to investigate these allegations.
“Our enquiries have led us to identify a man seen on CCTV who we urgently want to identify and speak to.
“I urge anyone who recognises this man, or who was in the area at the time of these incidents and saw anything suspicious, to come forward.”
Anyone with information should call 101 with the reference 1980/10AUG. Information can also be provided to Crimestoppers, anonymously, on 0800 555 111.