Detectives in Harrow are investigating after a 26-year-old woman was stabbed, at around 8.30pm on Tuesday (October 13), in Uxbridge Road.
She was taken to a west London hospital for treatment and was subsequently discharged the following day.
Officers would like to speak to 20-year-old Hamid Shafiq as they believe he may be able to help with enquiries.
Anyone with any information regarding the incident is asked to call Detective Sergeant Matt Smith or Detective Constable Mark Mildenstein at Harrow CID on 020 8733 5414 or via 101.
Alternatively, contact Crimestoppers anonymously on 0800 555 111 or via crimestoppers-uk.org .