Police were called by LAS at just before 5am on Sunday, 27 October after a man was found with multiple stab injuries in High Street, Hounslow. Officers attended. The 30-year-old victim was taken to a west London hospital, where his condition is being treated as life-threatening.
At this stage there have been no arrests.
Officers from West Area Command Unit investigate.
Those with information that could assist police should call 101 ref CAD 1854/27 Oct.