A murder investigation has been launched following the death of a woman in Hillingdon.
Police were called at approximately 1100hrs on Friday, 30 January to reports of a woman injured at a residential address in Collingwood Road, Hillingdon.
London Ambulance Service also attended and the woman, believed aged 42, was found suffering stab injuries – she subsequently died at 1222hrs.
Next of kin have been informed but formal identification awaits.
A post-mortem examination will be scheduled in due course.
The Homicide and Major Crime Command based at Barking investigate.
A man, aged 35, was arrested in Hayes a short while later on suspicion of murder. He remains in custody at a west London police station.
Anyone with information is asked to call the incident room on 020 8345 3775 or call Crimestoppers anonymously on0800 555 111.