Police were called at 3.34am on Monday, 25 November, to reports of a man stabbed at Station Road, Hayes.
Officers and London Ambulance Service [LAS] attended.
At the scene a male, no further details, was found suffering from stab wounds.
He was taken by LAS to a west London hospital where his injuries were deemed life threatening. We await further updates.
A crime scene remains in place.
No arrests. Enquiries continue.
Anyone who has information concerning this incident is asked to call police on 101 quoting 773/25NOV,